A5072038850- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Paleontology and Stratigraphy of Fossils
- Cryospheric studies and observations
- High-pressure geophysics and materials
- Geological Studies and Exploration
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Winter Sports Injuries and Performance
- Geological and Geophysical Studies
- Polar Research and Ecology
- Botany, Ecology, and Taxonomy Studies
- Climate change and permafrost
- Archaeology and Natural History
- Landslides and related hazards
- Marine and environmental studies
- Seismic Waves and Analysis
- Groundwater flow and contamination studies
- Soil and Unsaturated Flow
- NMR spectroscopy and applications
- Geography Education and Pedagogy
- Geomagnetism and Paleomagnetism Studies
- Geochemistry and Geochronology of Asian Mineral Deposits
University of Minnesota, Duluth
2014-2024
Planetary Science Institute
2024
Washington State University
2008-2019
University of Minnesota
2003-2012
Environmental Earth Sciences
1989-2011
Australian National University
2008
University of Colorado Boulder
2008
Cooperative Institute for Research in Environmental Sciences
2008
University of Minnesota System
2007
Southern Methodist University
1990-2002
Research Article| September 01, 2010 Extraordinary transport and mixing of sediment across Himalayan central Gondwana during the Cambrian–Ordovician Paul M. Myrow; Myrow * 1Department Geology, Colorado College, Springs, 80903, USA *E-mail: pmyrow@coloradocollege.edu Search for other works by this author on: GSW Google Scholar Nigel C. Hughes; Hughes † 2Department Earth Sciences, University California, Riverside, California 92521, †E-mail: nigel.hughes@ucr.edu John W. Goodge; Goodge...
Research Article| September 01, 2004 Provenance of Neoproterozoic and lower Paleozoic siliciclastic rocks the central Ross orogen, Antarctica: Detrital record rift-, passive-, active-margin sedimentation John W. Goodge; Goodge 1Department Geological Sciences, University Minnesota, Duluth, Minnesota 55812, USA Search for other works by this author on: GSW Google Scholar Ian S. Williams; Williams 2Research School Earth Australian National University, Canberra, ACT 0200, Australia Paul Myrow...
The positions of Laurentia and other landmasses in the Precambrian supercontinent Rodinia are controversial. Although geological isotopic data support an East Antarctic fit with western Laurentia, alternative reconstructions favor juxtaposition Australia, Siberia, or South China. New geologic, age, provide a positive test Antarctica: Neodymium isotopes Neoproterozoic rift-margin strata similar; hafnium approximately 1.4-billion-year-old Antarctic-margin detrital zircons match those...
Abstract A dataset to describe exposed bedrock and surficial geology of Antarctica has been constructed by the GeoMAP Action Group Scientific Committee on Antarctic Research (SCAR) GNS Science. Our group captured existing geological map data into a geographic information system (GIS), refined its spatial reliability, harmonised classification, improved representation glacial sequences geomorphology, thereby creating comprehensive coherent geology. total 99,080 polygons were unified for...
Sandstone tempestite beds in the Starshot Formation, central Transantarctic Mountains, were deposited a range of shoreline to shelf environments.Detailed sedimentological analysis indicates that these largely by wave-modified turbidity currents.These currents are types combined flows which storm-generated waves overprint driven excess-weight forces.The interpretation tempestites Formation as wave-dominated turbidites rests on multiple criteria.First, generally well graded and contain...
New U‐Pb ages for detrital and igneous zircons constrain the depositional age sedimentary provenance of Beardmore Group, a siliciclastic succession that records transformation East Antarctic margin during Rodinia breakup subsequent Gondwana amalgamation. We divide rocks previously mapped as Group into (1) an inboard late Neoproterozoic assemblage (probably ≤670 Ma) (2) volumetrically dominant, outboard is latest Early Cambrian or younger (≤520 Ma). The contains mature, multicycle sediment...
The Cambrian–Ordovician Ross Orogeny in Antarctica produced a voluminous magmatic belt composed mainly of post-orogenic granitoids. This has strong calc-alkaline characteristics reflecting convergent-margin origin associated with subduction paleo-Pacific oceanic lithosphere beneath cratonic East Antarctica. However, it is unclear how and when magmatism began, to what degree was syn-orogenic deformation intra-arc extension. New U–Pb zircon ages, whole-rock geochemical Sr–Nd isotope data for...
The Cambrian explosion, one of the most consequential biological revolutions in Earth history, occurred two phases separated by Sinsk event, first major extinction Phanerozoic. Trilobite fossil data show that Series 2 strata Ross Orogen, Antarctica, and Delamerian Australia, record nearly identical synchronous tectono-sedimentary shifts marking event. These resulted from an abrupt pulse contractional supracrustal deformation on both continents during Pararaia janeae trilobite Zone. event was...
Research Article| January 01, 1993 Neoproterozoic-Cambrian basement-involved orogenesis within the Antarctic margin of Gondwana John W. Goodge; Goodge 1Department Geological Sciences, Southern Methodist University, Dallas, Texas 75275 Search for other works by this author on: GSW Google Scholar Nicholas Walker; Walker 2Department University Texas, Austin, 78713 Vicki L. Hansen Author and Article Information Publisher: Society America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print...
Aeromagnetic and satellite magnetic data provide glimpses of the crustal architecture within Ross Sea sector enigmatic, ice‐covered East Antarctic shield critical for understanding both global tectonic climate history. In central Transantarctic Mountains (CTAM), exposures Precambrian basement, coupled with new high‐resolution data, other recent aeromagnetic transects, seismic tomography show that in this region comprises an Archean craton modified by Proterozoic magmatism early Paleozoic...
Zircon U-Pb ages from glacial clasts in Quaternary tills of the central Transantarctic Mountains indicate presence Grenville-age crust along Ross Sea margin East Antarctica. The polymict contain a variety igneous, metaigneous, and metasedimentary with Proterozoic not known basement exposure. Four orthogneiss have igneous ∼1065–1100 Ma Orogen metamorphic overgrowths ∼500–550 Ma. latter that these are glacially far traveled. Grenville-like signatures also come paragneiss containing detrital...
Research Article| July 01, 2010 Composition and age of the East Antarctic Shield in eastern Wilkes Land determined by proxy from Oligocene-Pleistocene glaciomarine sediment Beacon Supergroup sandstones, Antarctica John W. Goodge; Goodge † 1Department Geological Sciences, University Minnesota, Duluth, Minnesota 55812, USA †E-mails: jgoodge@d.umn.edu; Mark.Fanning@anu.edu.au Search for other works this author on: GSW Google Scholar C. Mark Fanning 2Research School Earth Australian National...
Abstract Rapid Access Ice Drill is a new drilling technology capable of quickly accessing the glacial bed Antarctic ice sheets, retrieving core and rock samples, providing boreholes for downhole logging physical properties. Scientific goals include searching old near sampling subglacial bedrock. During field trials McMurdo Station on piedmont glacier at Minna Bluff in 2019–20 austral summer, we successfully completed ‘top-to-bottom’ operational sequence three by (1) augering through firn,...
Abstract A combination of field mapping, detailed sedimentology, carbon isotope chemostratigraphy, and new paleontological finds provides a significantly improved understanding the depositional tectonic history uppermost Neoproterozoic lower Paleozoic strata central Trans ant arc tic Mountains. On basis these data, we suggest revision existing stratigraphy, including introduction formations, as follows. The oldest rocks appear to record late deposition across narrow marine margin underlain...
ABSTRACT A new Rapid Access Ice Drill (RAID) will penetrate the Antarctic ice sheets in order to create borehole observatories and take cores deep ice, glacial bed bedrock below. RAID is a mobile drilling system make multiple long, narrow boreholes single field season Antarctica. based on mineral exploration-type rotary rock-coring using threaded drill pipe cut through reverse circulation of non-freezing fluid for pressure-compensation, maintenance temperature removal cuttings. Near bottom...
Structural and age relationships in Beardmore Group rocks the central Transantarctic Mountains of Antarctica indicate that they experienced a single deformation latest Neoproterozoic to early Paleozoic time. New structural data contrast with earlier suggestions record two orogenic deformations, one Ross orogeny distinct tectonic event presumed referred as orogeny. In Nimrod Glacier area, metasedimentary contain only set geometrically related regional structures associated development...
The Nimrod Group in the central Transantarctic Mountains and Lanterman Metamorphic Complex northern Victoria Land of Antarctica constitute internal metamorphic basement terrains Ross orogen that share many first-order similarities lithology, structure, metamorphism. However, new $$^{40}Ar/^{39}Ar$$ cooling ages determined for hornblende muscovite from tectonites Geologists (Nimrod Group) ranges (Lanterman complex) indicate these experienced different post-kinematic histories. ductile L-S...
Research Article| November 01, 1999 2.5 b.y. of punctuated Earth history as recorded in a single rock John W. Goodge; Goodge 1Department Geological Sciences, Southern Methodist University, Dallas, Texas 75275-0395, USA Search for other works by this author on: GSW Google Scholar C. Mark Fanning 2Research School Australian National Mills Road, Canberra, ACT 0200, Australia Geology (1999) 27 (11): 1007–1010. https://doi.org/10.1130/0091-7613(1999)027<1007:BYOPEH>2.3.CO;2 Article first online:...
High‐grade ductile tectonites of the Precambrian Nimrod Group in central Transantarctic Mountains form Miller Range shear zone (MRSZ). With no exposed boundaries, this has a minimum structural thickness 12–15 km. Shear‐sense indicators record consistent top‐to‐the‐SE, or left‐lateral, within NW striking, moderately SW dipping zone. Cylindrical folds with axes normal to elongation lineation (L e ) are kinematically other indicators. They may represent early stages development subordinate...