lvg_ages point locations of age data lvg_fossils point locations of fossil data lvg_structure point locations of bedding and foliation orientation data PD_97TLdh point locations of drill holes from Placer Dome Exploration, Inc. 1997 Tolovana project lvg_foldsymbols symbols depicting fold types and orientations lvg_faultsymbols symbols and text depicting fault movement lvg_dikeoriented dike strike and trend orientations from DGGS mapping lvg_dikes dike locations and compositions from DGGS mapping lvg_industrydikes dike locations from industry data lvg_xsectlines cross-section traces livfold_polyline axial traces of folds bedcont stratigraphic, intrusive, and fault (including thrust) contacts lvgborder border of the map area lvgshtdk polygon containing large number of industry-located igneous rock samples lmst areas of limestone within the Amy Creek dolomite unit (lPzZd) bedpolys bedrock unit polygons
Athey, J.E., Szumigala, D.J., Newberry, R.J., Werdon, M.B., and Hicks, S.A., 2004, Bedrock geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska: Preliminary Interpretive Report PIR 2004-3B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS), Fairbanks, AK, USA.Online Links:
This is a Vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000032
Ordinates (y-coordinates) are specified to the nearest 0.000032
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
Unique sample identifier
| Value | Definition |
|---|---|
| --- | Location of sample is outside of map area and not shown on map |
Unique identifier for each sample. Letters correspond to sample type: A = Ar/Ar, K = K/Ar, S = Sm/N
| Range of values | |
|---|---|
| Minimum: | 421700 |
| Maximum: | 434278 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7261024 |
| Maximum: | 7268767 |
| Units: | meters |
| Value | Definition |
|---|---|
| Cgs | GREENSTONE |
| Cmg | METAGABBRO |
| Cmg(?) | METAGABBRO? |
| Kmk | MONEY KNOB PLUTON |
| lPzZmb | AMY CREEK METABASALT |
| Tl | LAMPROPHYRE DIKE |
| Ka | MONZONITE TO SYENITE DIKES |
Mineral or whole rock sample analyzed for age determination
| Value | Definition |
|---|---|
| --- | Age not determined by 40Ar/39Ar method |
Age of sample with 1-sigma error in units 'millions of years ago' (Ma); one sample was analyzed twice
| Value | Definition |
|---|---|
| integrated | Integrated age determined from total gas measured, equivalent to potassium-argon (K-Ar) age |
| plateau | Plateau age defined as three or more gas fractions, with a Mean Standard Weighted Deviation (MSWD) < ~2.5, and with more than 50% 39Ar released |
| --- | Age not determined by 40Ar/39Ar method |
| Value | Definition |
|---|---|
| --- | Age not determined by K-Ar or Sm-Nd method |
Age of sample with 1-sigma error in units 'millions of years ago' (Ma)
Sample description
| Value | Definition |
|---|---|
| Athey and others, 2004a | Reference for collection of Livengood Quadrangle 40Ar/39Ar and K-Ar age data |
| This study | Work conducted for this study; raw data not published in Athey and others (2004a) |
| --- | No reference, age not from 40Ar/39Ar data |
| Value | Definition |
|---|---|
| Rinehart and others, 1997 | Reference for K-Ar data |
| This study | Sm-Nd date is in process |
| --- | No reference, age not from K-Ar or Sm-Nd data |
Unique sample identifier
Unique map number for each sample
| Range of values | |
|---|---|
| Minimum: | 419133 |
| Maximum: | 442526 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7263542 |
| Maximum: | 7278410 |
| Units: | meters |
| Value | Definition |
|---|---|
| --- | Sample was not examined for megafossils |
Description of megafossil
| Value | Definition |
|---|---|
| DGGS | Personnel from Alaska Division of Geological & Geophysical Surveys |
| Blodgett, R.B. | U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508 |
| --- | Sample was not examined for megafossils |
| Value | Definition |
|---|---|
| --- | No macrofossils were identified in order to provide an age |
Geologic age of identified macrofossil
| Value | Definition |
|---|---|
| --- | Samples were not examined for microfossils |
Description of microfossil
| Value | Definition |
|---|---|
| C.D. Blome | See source Weber and others, 1994 |
| DGGS | Personnel from Alaska Division of Geological & Geophysical Surveys |
| Weber, F.R. | See source Weber and others, 1994 |
| N.M. Savage | Department of Geological Sciences, 1272 University of Oregon, Eugene, Oregon 97403-1272 |
| Blodgett, R.B. | U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508 |
| --- | Samples were not examined for microfossils |
| Value | Definition |
|---|---|
| --- | No microfossils were identified in order to provide an age |
Geologic age of microfossils
Sample description
| Value | Definition |
|---|---|
| Blodgett, 1992 | Fossil reference |
| This study | Samples collected during this study |
| Weber and others, 1994 | Fossil reference |
| Value | Definition |
|---|---|
| Cwl | METAGABBRO |
| Dc | METAGABBRO |
| Old | MONEY KNOB PLUTON |
| Sl | AMY CREEK METABASALT |
| Ss | LAMPROPHYRE DIKE |
| lPzZd | MONZONITE TO SYENITE DIKES |
| lPzZmc | AMY CREEK SILICEOUS MUDSTONE AND CHERT |
Unique sample identifier.
| Range of values | |
|---|---|
| Minimum: | 419404 |
| Maximum: | 441636 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7265210 |
| Maximum: | 7278083 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 350 |
| Units: | degrees |
| Range of values | |
|---|---|
| Minimum: | 2 |
| Maximum: | 90 |
| Units: | degrees |
| Value | Definition |
|---|---|
| foliation | Foliation |
| vertical foliation | Vertical foliation |
| bedding | Bedding |
| vertical bedding | Vertical bedding |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 4 |
| Units: | degrees |
| Range of values | |
|---|---|
| Minimum: | 427625 |
| Maximum: | 433265 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7265475 |
| Maximum: | 7269377 |
| Units: | meters |
Unique number
| Value | Definition |
|---|---|
| DGGS estimate | Location estimated from Placer Dome Exploration, Inc. notes stating the 97-TL6 collar is near the junction of Amy and Lucille creeks, and the bedrock at the location was siliceous dolomite |
| GPS location by DGGS | Collar located in the field by DGGS and location measured with a Garmin 12XL GPS |
| Minehane and Rogers, 1997 | Collar location estimated from Placer Dome Exploration, Inc. 1997 Tolovana project map; see Source information |
| Value | Definition |
|---|---|
| anticline symbol | Anticline symbol |
| over anti symbol | Overturned anticline symbol |
| over syn symbol | Overturned syncline symbol |
| plunge symbol | Plunge direction of the fold |
| syncline symbol | Syncline symbol |
| Value | Definition |
|---|---|
| NULL | Plunge is not recorded for this type of symbol |
| Range of values | |
|---|---|
| Minimum: | 5 |
| Maximum: | 50 |
| Units: | degrees |
| Value | Definition |
|---|---|
| continuation of fault unk | '?' marks where the fault trace can no longer be mapped (aka 'unknown') |
| down-thrown | 'D' marks down-thrown side of fault |
| up-thrown | 'U' marks up-thrown side of fault |
| right lateral | Faults interpreted with right lateral movement |
| named fault | Prominent fault with name |
| Value | Definition |
|---|---|
| ? | Continuation of fault unknown |
| D | Down-thrown side of fault |
| U | Up-thrown side of fault |
| MYRTLE CREEK FAULT | Myrtle Creek Fault |
| VICTORIA CREEK FAULT | Victoria Creek Fault |
| Null | No text string is necessary for this record |
Unique sample identifier.
| Range of values | |
|---|---|
| Minimum: | 429249 |
| Maximum: | 434090 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7264828 |
| Maximum: | 7267650 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 10 |
| Maximum: | 300 |
| Units: | degrees |
| Range of values | |
|---|---|
| Minimum: | 58 |
| Maximum: | 90 |
| Units: | degrees |
| Value | Definition |
|---|---|
| 1 | Strike of dike with fixed-length line indicating orientation; point location of measurement indicated by easting and northing |
| 2 | Trend of dike where strike and dip cannot be measured, fixed-length line indicating orientation; point location of measurement indicated by easting and northing |
Unique sample identifier.
| Range of values | |
|---|---|
| Minimum: | 421051 |
| Maximum: | 434487 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7264828 |
| Maximum: | 7269125 |
| Units: | meters |
| Value | Definition |
|---|---|
| Olivine clinopyroxenite | Olivine clinopyroxenite |
| Granite | Granite |
| Lamprophyre | Lamprophyre |
| Quartz monzodiorite | Quartz monzodiorite |
| Quartz monzonite | Quartz monzonite |
| Quartz syenite | Quartz syenite |
| Syenite | Syenite |
| Undifferentiated alkalic | Undifferentiated alkalic |
| Undifferentiated calc alkalic | Undifferentiated calc alkalic |
| Undifferentiated felsic | Undifferentiated felsic |
| Value | Definition |
|---|---|
| Ka | MONZONITE TO SYENITE DIKES |
| Tl | LAMPROPHYRE DIKE |
| Cc | OLIVINE CLINOPYROXENITE DIKE |
| Ka | MONZONITE TO SYENITE DIKES |
| --- | Dike is equivalent to either unit Ka or Kc |
| Range of values | |
|---|---|
| Minimum: | 426936 |
| Maximum: | 435924 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 7264791 |
| Maximum: | 7271164 |
| Units: | meters |
| Value | Definition |
|---|---|
| 1981-1984 soil grid (E. Twelker); Hanneman, 1998 | See source information |
| Freeman, 1997 | See source information |
| Freeman, 2003 | See source information |
| Hite, 1977 | See source information |
| Minehane and Rogers, 1997 | See source information; some dikes may be from drill holes |
| Range of values | |
|---|---|
| Minimum: | A |
| Maximum: | C |
| Units: | Alpha characters |
| Value | Definition |
|---|---|
| anticline | Anticline |
| overanti | Overturned anticline |
| oversyn | Overturned syncline |
| syncline | Syncline |
| Value | Definition |
|---|---|
| Permian | Thrust faults with possible Permian movement; timing of Cambrian ophiolite assemblage emplacement over the lower Paleozoic to Late Proterozoic Amy Creek units may be constrained by 40Ar/39Ar ages reset to 200-250 Ma (Athey and others, 2004a) |
| Early K | Thrust faults with possible Early Cretaceous movement; in the Money Knob area, the Cascaden Ridge sedimentary unit (Dc) is thrusted over the Cambrian ophiolite and Amy Creek assemblages. Emplacement of the Dc unit may be a later event, accommodating stresses related to compression of the Manley basin. |
| <NULL> | Contacts with no movement or with an unknown age of movement |
| Value | Definition |
|---|---|
| Thrust | Low-angle reverse fault; "Permian or Early K" |
| Contact | Stratigraphic or intrusive contacts |
| Contact ukn | Unconformable contact or thrust fault; regionally interpreted to be an unconformable contact (Foster, 1966; Weber and others, 1992); in the Money Knob area the contact is a thrust fault (this study) |
| Fault | High-angle fault |
| strat/fault? | Contact or high-angle fault; regionally the contact between units PDs and Trg is interpreted as a high-angle fault (this study); in the map area, the relationship between unit TrDs and adjacent units Trg and PDs is unclear |
Rock type is limestone
| Value | Definition |
|---|---|
| Cgs | GREENSTONE |
| Clg | LAYERED METAGABBRO |
| Cmg | METAGABBRO |
| Cs | SERPENTINITE, METAGABBRO, AND GREENSTONE |
| Cwl | WICKERSHAM LIMESTONE |
| CZwa | WICKERSHAM SHALE |
| Dc | SANDSTONE, SHALE, AND CONGLOMERATE |
| Kmk | MONEY KNOB PLUTON |
| Ko | OLIVE CREEK PLUTON |
| Krc | RUTH CREEK PLUTON |
| lPzZd | AMY CREEK DOLOMITE AND LIMESTONE |
| lPzZmb | AMY CREEK METABASALT |
| lPzZmc | AMY CREEK SILICEOUS MUDSTONE AND CHERT |
| Old | LIVENGOOD DOME CHERT |
| PDs | SHALE |
| Sl | LOST CREEK LIMESTONE |
| Ss | LOST CREEK SANDSTONE, SILTSTONE, SHALE, AND CONGLOMERATE |
| TrDs | SANDSTONE, SHALE, AND CHERT |
| Trg | RAMPART GABBRO, QUARTZ GABBRO, AND MINOR CHERT |
This project is part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS). Partial funding for the geologic mapping, geochronologic dates, and geochemical analyses performed for this project was also provided through the U.S. Geological Survey STATEMAP Program under award number 03HQAG0055.
The bedrock geologic map was produced from field work in 2003 by mineral-resource personnel from the Alaska Division of Geological & Geophysical Surveys and the University of Alaska Fairbanks. Additional mapping by DGGS personnel in 2001 was incorporated into the project. The purpose of the project is to provide 1:50,000-scale geologic mapping of the Livengood airborne geophysical survey area. The Livengood airborne geophysical surveyhelicopter-based survey included aeromagnetic and electromagnetic data which were released by DGGS in 1999. The geophysical survey and geologic mapping are part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program, a special multi-year investment by the State of Alaska to expand Alaska's geologic and mineral resources knowledge base, catalyze future private-sector mineral exploration and development, and guide state planning.
Albanese, M.D., 1983, Bedrock geologic map of the Livengood B-4 Quadrangle, east-central Alaska: Report of Investigations RI 83-3, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Allegro, G.L., 1984, Geology of the Old Smoky Prospect, Livengood C-4 Quadrangle: Report of Investigations RI 84-1, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Athey, J.E., Layer, P.W., and Drake, Jeff, 2004, 40Ar/39Ar ages of rocks collected in the Livengood C-3, C-4, and B-5 quadrangles, Alaska: Raw-Data File RDF 2004-1, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Athey, J.E., Werdon, M.B., Szumigala, D.J., Newberry, R.J., Hicks, S.A., and Erickson, H.A., 2004, Major-oxide, minor-oxide, and trace-element geochemical data from rocks collected in the Livengood Quadrangle, Alaska, in 2001 and 2003: Raw-Data File RDF 2004-2, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Blodgett, R.B., 1992, Taxonomy and paleobiogeographic affinities of an early Middle Devonian (Eifelian) gastropod faunule from the Livengood Quadrangle, east-central Alaska: Palaeontographica Abteilung A, Stuttgart, Germany.
Brosgé, W.P., Lanphere, M.A., Reiser, J.N., and Chapman, R.M., 1969, Probable Permian age of the Rampart Group, central Alaska: Bulletin B 1294-B, U.S. Geological Survey, Washington, DC, USA.Online Links:
Bundtzen, T.K., 1983, Bedrock geologic outcrop map of the Livengood B-3 Quadrangle: Report of Investigations RI 83-6, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Chapman, R.M., Weber, F.R., Michael Churkin, Jr., and Carter, Claire, 1980, The Livengood Dome Chert, a new Ordovician formation in central Alaska and its relevance to displacement on the Tintina Fault: Professional Paper P 1226-F, U.S. Geological Survey, Washington, DC, USA.Online Links:
DGGS, Staff, Geoterrex-Dighem, Staff, and Stevens Exploration Inc., Staff, 1999, CD-ROM containing profile and gridded data and section lines of 1998 geophysical survey data for part of the Livengood mining district, Alaska, central Livengood Quadrangle: Public-Data File PDF 99-19, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Foster, R.L., 1966, The petrology and structure of the Amy Dome area, Tolovana mining district, east-central Alaska: University of Missouri-Rolla, Rolla, MO, USA.
Freeman, C.J., 2003, Executive summary, Livengood project, Alaska: Avalon Development Corporation, Fairbanks, AK, USA, not published.
Hanneman, Karl, 1998, Summary report, Livengood Gold project, Interior Alaska: Alaska Placer Development, Inc., Not published.
Hite, J.B., 1977, Summary report on the Money Knob project, Livengood, Alaska: Homestake Mining Company, Not published.
Irvine, T.N., and Baragar, W.R.A., 1971, A guide to the chemical classification of the common volcanic rocks: Canadian Journal of Earth Sciences (National Research Council of Canada), Ottawa, ON, Canada.
Joesting, H.R., 1941, The Hudson Cinnabar prospect (Olive Creek), Tolovana district, Alaska: Prospect Evaluation PE 49-6, Alaska Territorial Department of Mines, Fairbanks, AK, USA.Online Links:
Lister, G.S., and Snoke, A.W., 1984, S-C mylonites: Elsevier Ltd., Amsterdam.
J.B. Mertie, Jr., 1917, The gold placers of the Tolovana district: Bulletin B 662-D, U.S. Geological Survey, Washington, DC, USA.Online Links:
Newberry, R.J., and Haug, S.A., 1997, CIPW norm, trace element, and Sr isotopic data for igneous rocks of the Tanana B-1 Quadrangle and vicinity: Public-Data File PDF 97-29I, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reifenstuhl, R.R., Dover, J.H., Newberry, R.J., Clautice, K.H., Liss, S.A., Blodgett, R.B., and Weber, F.R., 1998, Interpretive geologic bedrock map of the Tanana A-1 and A-2 quadrangles, central Alaska: Public-Data File PDF 98-37B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reifenstuhl, R.R., Dover, J.H., Pinney, D.S., Newberry, R.J., Clautice, K.H., Liss, S.A., Blodgett, R.B., Bundtzen, T.K., and Weber, F.R., 1997, Geologic map of the Tanana B-1 Quadrangle, central Alaska: Report of Investigations RI 97-15A, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Rinehart, C.D., Light, T.D., and Shew, N.B., 1997, Petrography and radiometric ages for selected rocks from the Livengood Quadrangle, Alaska: Open-File Report OF 97-484-D, U.S. Geological Survey, Washington, DC, USA.Online Links:
Robinson, M.S., 1983, Bedrock geologic map of the Livengood C-4 Quadrangle, east-central Alaska: Report of Investigations RI 83-4, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Saunders, R.H., 1955, Report on the Griffin Nickel prospect, Livengood Quadrangle: Prospect Evaluation PE 49-13, Alaska Territorial Department of Mines, Fairbanks, AK, USA.Online Links:
Smith, T.E., 1983, Bedrock geologic map of the Livengood C-3 Quadrangle, east-central Alaska: Report of Investigations RI 83-5, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Weber, F.R., Blodgett, R.B., Harris, A.G., and J.T. Dutro, Jr., 1994, Paleontology of the Livengood Quadrangle, Alaska: Open-File Report OF 94-215, U.S. Geological Survey, Washington, DC, USA.Online Links:
Weber, F.R., Smith, T.E., Hall, M.H., and Forbes, R.B., 1985, Geologic guide to the Fairbanks-Livengood area, east-central Alaska, AAPG, SEPM, and SEG Meeting, Anchorage, Alaska, 1985: Alaska Geological Society, Anchorage, AK, USA.
Weber, F.R., Wheeler, K.L., Rinehart, C.D., Chapman, R.M., and Blodgett, R.B., 1992, Geologic map of the Livengood Quadrangle, Alaska: Open-File Report OF 92-562, U.S. Geological Survey, Washington, DC, USA.Online Links:
Wheeler, K.L., and Weber, F.R., 1988, Bibliography of selected references on the geology of the Livengood Quadrangle, east-central Alaska: Open-File Report OF 88-203, U.S. Geological Survey, Washington, DC, USA.Online Links:
Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (Interior) Alaska: Open-File Report OF 98-133, U.S. Geological Survey, Washington, DC, USA.Online Links:
Blodgett, R.B., Zhang, Ning, Ormiston, A.R., and Weber, F.R., 1988, A Late Silurian age determination for the limestone of the "Lost Creek Unit," Livengood C-4 Quadrangle, east-central Alaska:.This is part of the following larger work.
T.D. Hamilton, ed., and J.P. Galloway, ed., 1988, Geological Studies in Alaska by the U.S. Geological Survey during 1987: Circular C 1016, U.S. Geological Survey, Washington, DC, USA.Online Links:
Clough, J.G., and Goldhammer, R.K., 2000, Evolution of the neoproterozoic Katakturuk Dolomite ramp complex, northeastern Brooks Range, Alaska:.This is part of the following larger work.
J.P. Grotzinger, ed., and N.P. James, ed., 2000, Carbonate Sedimentation and Diagenesis in the Evolving Precambrian World: SEPM Special Publication, Tulsa, Oklahoma.
Gergen, L.D., Decker, J.E., and Plafker, George, 1988, A comparative petrologic study of sandstone from the Wilber Creek, Cascaden Ridge, and Wickersham units in the Livengood Quadrangle:.This is part of the following larger work.
J.P. Galloway, ed., and T.D. Hamilton, ed., 1988, Geological Studies in Alaska by the U.S. Geological Survey during 1987: Circular C 1016, U.S. Geological Survey, Washington, DC, USA.Online Links:
Péwé, T.L., 1975, Quaternary geology of Alaska: Professional Paper P 835, U.S. Geological Survey, Washington, DC, USA.Online Links:
Karl, S.M., Ager, T.A., Hanneman, Karl, and Teller, S.D., 1988, Tertiary gold-bearing gravel at Livengood, Alaska:.This is part of the following larger work.
J.P. Galloway, ed., and T.D. Hamilton, ed., 1988, Geological Studies in Alaska by the U.S. Geological Survey during 1987: Circular C 1016, U.S. Geological Survey, Washington, DC, USA.Online Links:
Loney, R.A., and Himmelberg, G.R., 1988, Ultramafic rocks of the Livengood Terrane:.This is part of the following larger work.
J.P. Galloway, ed., and T.D. Hamilton, ed., 1988, Geologic studies in Alaska by the U.S. Geological Survey during 1987: Circular Circ. 1016, U.S. Geological Survey, Washington, DC, USA.Online Links:
Moore, T.E., 1987, Geochemistry and tectonic setting of some volcanic rocks of the Franklinian assemblage, central and eastern Brooks Range:.This is part of the following larger work.
Irv Tailleur, ed., and Paul Weimer, ed., 1987, Alaskan North Slope Geology, Volume II: SEPM, Pacific Section, California and Alaska Geological Society, Fullerton, California.
Weber, F.R., Wheeler, K.L., Dover, J.H., Rinehart, C.D., Blodgett, R.B., Cady, J.W., Karl, S.M., McCammon, R.B., and Miyaoka, R., 1988, Geologic framework:.This is part of the following larger work.
Weber, F.R. , ed., McCammon, R.B., ed., Rinehart, C.D. , ed., Light, T.D., ed., and Wheeler, K.L. , ed., 1988, Geology and mineral resources of the White Mountains National Recreation Area, east-central Alaska: Open-File Report OF 88-284, U.S. Geological Survey, Washington, DC, USA.Online Links:
Division of Geological & Geophysical Surveys, 1973, Unpublished miscellaneous geologic mapping of trenches and streams in the Livengood area.
Freeman, C.J., Kulash, William, Wolf, Ken, McCoy, Dan, and Wietchy, D.M., 1997, Summary report for the Tolovana Gold project, Livengood-Tolovana mining district, Alaska.
Minehane, D.L., and Rogers, J.A., 1997, 1997 Tolovana project report, Livengood, central-Interior Alaska.
Morrison, P.R., 1990, Plate V. Geologic cross-section A-A', in Money Knob summary report.
University of Alaska Fairbanks geologic field camp, 2001, Unpublished data from University of Alaska-Fairbanks field camp.
USGS, 1997, Digital Raster Graphic (DRG), Livengood C-3: USGS, Reston, VA, USA.Online Links:
USGS, 1997, Digital Raster Graphic (DRG), Livengood C-4: USGS, Reston, VA, USA.Online Links:
Data sources used in this process:
Data sources used in this process:
Data sources used in this process:
Athey, Jennifer E., Werdon, Melanie B., Newberry, Rainer J., Szumigala, David J., Craw, Patty A., and Hicks, Shelley A., 2004, Geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska: Preliminary Interpretive Report PIR 2004-3a, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Athey, Jennifer E., and Craw, Patty A., 2004, Geologic maps of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska: Preliminary Interpretive Report PIR 2004-3, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
DGGS, Staff, Geoterrex-Dighem, Staff, and Stevens Exploration Inc., Staff, 1999, CD-ROM containing profile and gridded data and section lines of 1998 geophysical survey data for part of the Livengood mining district, Alaska, central Livengood Quadrangle: Public-Data File PDF 99-19, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Athey, J.E., Layer, P.W., and Drake, Jeff, 2004, 40Ar/39Ar ages of rocks collected in the Livengood C-3, C-4, and B-5 quadrangles, Alaska: Raw-Data File RDF 2004-1, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Athey, J.E., Werdon, M.B., Szumigala, D.J., Newberry, R.J., Hicks, S.A., and Erickson, H.A., 2004, Major-oxide, minor-oxide, and trace-element geochemical data from rocks collected in the Livengood Quadrangle, Alaska, in 2001 and 2003: Raw-Data File RDF 2004-2, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Newberry, R.J., and Athey, J.E., Unknown, Microprobe-based compositions of placer and lode gold in the Livengood area, Tolovana mining district, Alaska: Raw-Data File in prep., State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.
Bundtzen, T.K., Eakins, G.R., and Conwell, C.N., 1982, Review of Alaska mineral resources 1981: Annual Report AR 1981, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Cathrall, J.B., Antweiler, J.C., and Mosier, E.L., 1987, Occurrence of platinum in gold samples from the Tolovana and Rampart districts, Livengood Quadrangle, Alaska: Open-File Report OFR 87-330, U.S. Geological Survey, Washington, DC, USA.Online Links:
Freeman, C.J., and Schaefer, J.R.G., 1999, Alaska resource data file, Livengood Quadrangle: Open-File Report OFR 99-574, U.S. Geological Survey, Washington, DC, USA.Online Links:
Glover, A.E., 1950, Placer gold fineness: Miscellaneous Report MR 195-1, Alaska Territorial Department of Mines, Fairbanks, AK, USA.Online Links:
Newberry, R.J., and Clautice, K.H., 1997, Compositions of placer gold in the Rampart-Eureka-Manley-Tofty area, eastern Tanana and western Livengood Quadrangles, central Interior Alaska, determined by electron microprobe analysis: Public-Data File PDF 97-49, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, Donald, Robinson, M.S., Smith, T.E., and Yeend, Warren, 1987, Significant metalliferous lode deposits and placer districts of Alaska: Bulletin B 1786, U.S. Geological Survey, Washington, DC, USA.Online Links:
Péwé, T.L., Wahrhaftig, Clyde, and Weber, F.R., 1966, Geologic map of the Fairbanks Quadrangle, Alaska: Miscellaneous Geological Investigations Map Map I-455, U.S. Geological Survey, Washington, DC, USA.Online Links:
Reger, R.D., 1987, Preliminary photointerpretive maps of the geology, geologic-materials, permafrost, and wetlands-classification, Fairbanks C-5 Quadrangle, Alaska: Public-Data File PDF 87-19, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Smith, P.S., 1941, Mineral industry of Alaska - 1940: Bulletin Bull. 926, U.S. Geological Survey, Washington, DC, USA.Online Links:
Szumigala, D.J., Swainbank, R.C., Henning, M.W., and Pillifant, F.M., 2003, Alaska's Mineral Industry 2002: Special Report SR 57, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Weber, F.R., Wheeler, K.L., Rinehart, C.D., Chapman, R.M., and Blodgett, R.B., 1992, Geologic map of the Livengood Quadrangle, Alaska: Open-File Report OFR 92-562, U.S. Geological Survey, Washington, DC, USA.Online Links:
Barnes, D.F., 1961, Gravity low at Minto Flats, Alaska:.This is part of the following larger work.
Unknown, ed.,, 1961, Short Papers in the Geologic and Hydrologic Sciences, Articles 293-435: Professional Paper P 424-D, U.S. Geological Survey, Washington, DC, USA.Online Links:
Location data for geologic point shape files were downloaded from Garmin 12XL GPS units into a Microsoft Access database. Field notes were manually entered into the database. Spatial data attributes were either queried directly from the database or attached to the objects using MapInfo Professional 6.5 or 7.5, and ArcGIS 8.3. Attributes were verified for consistency and completeness during the creation of the metadata. Geologic data used in the compilation are the field maps and notes from this project (2001 and 2003) as well as data from other sources as noted in the "Source_Information" section. The attributes of this geospatial data set consist of text identifiers and numeric codes that indicate the identity of the geologic unit or type of geologic feature and determine how each feature is symbolized. To check attribute accuracy, a color check plot was visually compared to the geologist's original compilation. Discrepancies between the digital geospatial dataset and the original analog or digital compilation were corrected as needed. The geologic interpretations presented in this report have undergone two technical reviews by geologists familiar with the subject of the report or geology of the map area. Reviewers' suggestions were incorporated into the final draft when deemed appropriate by the author.
DGGS location data and estimated position errors were downloaded from Garmin 12XL GPS units into an Access database. Sample numbers and locations with selected data were queried from the database or brought into an Excel spreadsheet and then spatially registered and analyzed in MapInfo Professional 6.5 or 7.5. See "Source_Information" section for horizontal positional accuracy of locations not measured by DGGS.
This dataset includes feature classes that contain information about geologic units; age, fossil, and field sample locations; structural features; structural measurements; dike locations; and drill hole locations.
Topology is present on appropriate polygon and line feature classes of the originating geodatabase; others are point feature classes.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
- Use_Constraints:
- Any hardcopies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.
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<http://dx.doi.org/10.14509/3310> |
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<http://dx.doi.org/10.14509/3310> |
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