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![]() Polar bears (Ursus maritimus) require the relative warmth and stability afforded by snow dens for successful reproduction. Pregnant bears must travel from foraging habitats on the sea ice to land in autumn to establish winter dens. Data of sea ice extent and composition from satellite-acquired passive microwave (PMW) imagery show a reduction in summer sea ice extent throughout the Arctic from 1979-2006. Additionally, General Circulation Models (GCM) predict that Arctic sea ice extent will continue to diminish throughout the 21st century. Greater energetic demands will be placed on pregnant polar bears in the future if they travel greater distances from summer forage habitats to traditional denning habitats on land....
Core Research Center, core R700, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "R700", "API Num": null, "Operator": "USGS", "Well Name": "Y-1 BLACK SAND BASIN", "Field": "UPPER GEYSER BASIN", "State": "WY", "County": "YELLOWSTONE NATL PARK", "Type": "FULL", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "44.45", "Longitude": "-110.85", "coordinates_geohash": "9xchveckpb94", "Source": "DERIVED FROM MAPPED LOCATION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "0", "Max Depth": "215"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/13260",...
Core Research Center, core T988, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "T988", "API Num": null, "Operator": "USGS", "Well Name": "OGALLALA WELL 1", "Field": null, "State": "WY", "County": "LARAMIE", "Type": "FULL", "Photos": "T", "Thin Sec": "F", "Analysis": "T", "Latitude": "41.0616", "Longitude": "-104.4624", "coordinates_geohash": "9xm9wghc1thb", "Source": null, "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "OGALLALA", "Age": "TERT", "Min Depth": "20", "Max Depth": "277"}, {"Formation": "WHITE RIVER", "Age": "TERT", "Min Depth": "278", "Max...
Core Research Center, core E768, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "E768", "API Num": "5002320013", "Operator": "USGS", "Well Name": "1 WALAKPA", "Field": "EXPLORATORY", "State": "AK", "County": "BARROW", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "71.099339", "Longitude": "-156.88439", "coordinates_geohash": "bs8kqp0r8v2j", "Source": "FROM STATE RECORDS", "Security Flag": "VIEWING ALLOWED, NO SAMPLING UNLESS APPROVED", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "1838", "Max Depth": "1889"}, {"Formation": "UNKNOWN",...
Categories: Physical Item;
Tags: Quaternary,
Unconsolidated surficial deposits, undivided,
sand,
silt
Core Research Center, core U599, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "U599", "API Num": null, "Operator": "USGS", "Well Name": "78-12 CORE HOLE", "Field": null, "State": "CO", "County": "GARFIELD", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "F", "Latitude": "39.63254", "Longitude": "-108.760506", "coordinates_geohash": "9x49mngh28bv", "Source": "FROM STATE RECORDS", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "GREEN RIVER", "Age": "TERT", "Min Depth": "20", "Max Depth": "330"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/15615",...
Categories: Physical Item;
Tags: GREEN RIVER,
Parachute Creek Member,
Parachute Creek Member of the Green River Formation,
TERT,
Tertiary,
Core Research Center, core E849, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "E849", "API Num": "5002320019", "Operator": "USGS", "Well Name": "2 WALAKPA", "Field": "WALAKPA", "State": "AK", "County": "BARROW", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "71.050117", "Longitude": "-156.952688", "coordinates_geohash": "bs8khqq8cmc2", "Source": "FROM STATE RECORDS", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "2984", "Max Depth": "3021"}, {"Formation": "UNKNOWN", "Age": null, "Min...
Categories: Physical Item;
Tags: Quaternary,
Unconsolidated surficial deposits, undivided,
sand,
silt
Core Research Center, core V257, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "V257", "API Num": null, "Operator": "USGS", "Well Name": "GR-77-1 GRAY RESERVOIR", "Field": "GRAND MESA COAL PROJ", "State": "CO", "County": "DELTA", "Type": "FULL", "Photos": "T", "Thin Sec": "F", "Analysis": "T", "Latitude": "38.90688", "Longitude": "-107.74155", "coordinates_geohash": "9wgmk6bcpbj7", "Source": "CENTER OF QUARTER SECTION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "MESAVERDE", "Age": "CRET", "Min Depth": "533", "Max Depth": "1038"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/15223",...
Categories: Physical Item;
Tags: CRET,
Calabrian - Middle Pleistocene,
MESAVERDE,
Older gravels and alluviums,
gravel
Core Research Center, core E763, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "E763", "API Num": "5002320014", "Operator": "USGS", "Well Name": "1 WEST DEASE", "Field": "EXPLORATORY", "State": "AK", "County": "BARROW", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "71.15907", "Longitude": "-155.629224", "coordinates_geohash": "bs9kfd478hpd", "Source": "FROM STATE RECORDS", "Security Flag": "VIEWING ALLOWED, NO SAMPLING UNLESS APPROVED", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "600", "Max Depth": "627"}, {"Formation":...
Categories: Physical Item;
Tags: Quaternary,
Unconsolidated surficial deposits, undivided,
clay,
granite,
peat,
Core Research Center, core T100, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "T100", "API Num": null, "Operator": "USGS", "Well Name": "GS-6", "Field": null, "State": "NV", "County": "WASHOE", "Type": "DISCONTINUOUS SEGMENTS", "Photos": "T", "Thin Sec": "F", "Analysis": "F", "Latitude": "39.3913812718412", "Longitude": "-119.754772007516", "coordinates_geohash": "9r4b4fvprt9y", "Source": "CENTER OF QUARTER SECTION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "2", "Max Depth": "212"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/16321",...
Categories: Physical Item;
Tags: Older alluvium and alluvial fan deposits,
Pliocene - Pleistocene,
alluvium
Core Research Center, core S695, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "S695", "API Num": null, "Operator": "USGS", "Well Name": "BOWIE MINE #14", "Field": "BOWIE MINE", "State": "AZ", "County": "GRAHAM", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "32.4469", "Longitude": "-109.3511", "coordinates_geohash": "9tf0xdubysw1", "Source": "PROVIDED BY DONOR", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": "UNKNOWN", "Min Depth": "10", "Max Depth": "203"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/122462",...
Core Research Center, core S349, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "S349", "API Num": null, "Operator": "USGS", "Well Name": "LGRB-POLY 21", "Field": null, "State": "CO", "County": "DELTA", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "38.3051", "Longitude": "-107.5255", "coordinates_geohash": "9wg9cjnr6k0j", "Source": "PROVIDED BY DONOR", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "COLLUVIUM", "Age": null, "Min Depth": "3", "Max Depth": "14"}, {"Formation": "MANCOS", "Age": null, "Min Depth": "14", "Max...
Core Research Center, core U544, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "U544", "API Num": null, "Operator": "USGS", "Well Name": "78-8 CORE HOLE", "Field": null, "State": "CO", "County": "RIO BLANCO", "Type": "SLABBED", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "40.046356", "Longitude": "-108.599759", "coordinates_geohash": "9x4gbf0nfjy6", "Source": "DERIVED FROM MAPPED LOCATION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "GREEN RIVER", "Age": "TERT", "Min Depth": "20", "Max Depth": "630"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/15414",...
Categories: Physical Item;
Tags: Eocene,
GREEN RIVER,
Green River Fm--Lower Part,
Green River Formation,
TERT,
Core Research Center, core T382, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "T382", "API Num": null, "Operator": "USGS", "Well Name": "1 CORE HOLE", "Field": "GOOSE CREEK", "State": "ID", "County": "CASSIA", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "T", "Latitude": "42.105891", "Longitude": "-113.934976", "coordinates_geohash": "9rqzx35hddur", "Source": "DERIVED FROM MAPPED LOCATION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "SALT LAKE", "Age": "TERT", "Min Depth": "186", "Max Depth": "358"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/15155",...
Categories: Physical Item;
Tags: Burdigalian - Langhian,
Older rhyolite, latite, and andesite,
SALT LAKE,
TERT,
andesite,
Core Research Center, core U832, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "U832", "API Num": null, "Operator": "USGS", "Well Name": "1 MASSACRE HILLS", "Field": null, "State": "WY", "County": "SWEETWATER", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "41.390729", "Longitude": "-109.618693", "coordinates_geohash": "9x653wfn7r45", "Source": "FROM STATE RECORDS", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "GREEN RIVER", "Age": "TERT", "Min Depth": "44", "Max Depth": "248"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/16418",...
Categories: Physical Item;
Tags: Eocene,
GREEN RIVER,
Green River Formation - Laney Member,
Laney Member,
TERT,
Core Research Center, core S579, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "S579", "API Num": null, "Operator": "USGS", "Well Name": "LGRB-POLY 7", "Field": null, "State": "CO", "County": "DELTA", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "38.4428", "Longitude": "-107.5739", "coordinates_geohash": "9wgd8n71d3q6", "Source": "PROVIDED BY DONOR", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "ALLUVIUM", "Age": null, "Min Depth": "3", "Max Depth": "28"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/113538", "surface_rocktype":...
Categories: Physical Item;
Tags: ALLUVIUM,
Early Cretaceous - Late Cretaceous,
Mancos Shale,
Mancos Shale,
sandstone,
Core Research Center, core B256, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "B256", "API Num": null, "Operator": "USGS", "Well Name": "BT-22 BLACKTAIL MTN", "Field": null, "State": "MT", "County": "FLATHEAD", "Type": "SLABBED", "Photos": "T", "Thin Sec": "F", "Analysis": "T", "Latitude": "47.998242", "Longitude": "-114.374925", "coordinates_geohash": "c2w9j3fdp0fd", "Source": "CENTER OF QUARTER SECTION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "BELT SERIES", "Age": "PREC", "Min Depth": "2", "Max Depth": "12"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/9330",...
Categories: Physical Item;
Tags: BELT SERIES,
Middle Proterozoic,
PREC,
Spokane Formation,
Spokane Formation,
Core Research Center, core R768, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "R768", "API Num": null, "Operator": "USGS", "Well Name": "DH-104", "Field": "ALTON COAL FIELD", "State": "UT", "County": "KANE", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "T", "Latitude": "37.3334", "Longitude": "-112.2865", "coordinates_geohash": "9w8hku76yfjj", "Source": "CENTER OF SECTION", "Security Flag": null, "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "DAKOTA", "Age": "CRETACEOUS", "Min Depth": "115", "Max Depth": "306"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/17293", "documents":...
Core Research Center, core S599, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "S599", "API Num": null, "Operator": "USGS", "Well Name": "LGRB-POLY 18", "Field": null, "State": "CO", "County": "DELTA", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "38.4559", "Longitude": "-107.5652", "coordinates_geohash": "9wgdb29mv5md", "Source": "PROVIDED BY DONOR", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "ALLUVIUM", "Age": null, "Min Depth": "3", "Max Depth": "18"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/113531",...
Categories: Physical Item;
Tags: ALLUVIUM,
Biotitic gneiss, schist, and migmatite,
Paleoproterozoic,
gneiss,
marble,
Core Research Center, core S161, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "S161", "API Num": null, "Operator": "USGS", "Well Name": "LGRB-POLY 1", "Field": null, "State": "CO", "County": "DELTA", "Type": "FULL", "Photos": "F", "Thin Sec": "F", "Analysis": "F", "Latitude": "38.3626", "Longitude": "-107.5815", "coordinates_geohash": "9wg6pztw36gq", "Source": "PROVIDED BY DONOR", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "COLLUVIUM", "Age": null, "Min Depth": "3", "Max Depth": "15"}, {"Formation": "MANCOS", "Age": "CRETACEOUS", "Min Depth": "15",...
Core Research Center, core T833, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "T833", "API Num": null, "Operator": "USGS", "Well Name": "02-OS-A01", "Field": null, "State": "OK", "County": "OSAGE", "Type": "FULL", "Photos": "T", "Thin Sec": "F", "Analysis": "T", "Latitude": "36.382989", "Longitude": "-96.182981", "coordinates_geohash": "9y7wgr3dq0ep", "Source": "CENTER OF SECTION", "Security Flag": "VIEWING ALLOWED, NO SAMPLING UNLESS APPROVED", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "WANN", "Age": "PENNSYLVANIAN", "Min Depth": "12", "Max Depth": "119"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/17415",...
Categories: Physical Item;
Tags: PENNSYLVANIAN,
Pennsylvanian,
WANN,
Wann Formation; Iola Limestone,
Wann and Iola Formations or Iola Limestone,
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