Science Explorer

Exploring: Folding (geologic)

Christopher Holm-Denoma

https://www.usgs.gov/node/719028 (HTML Document 44.06 KB)

Email: cholm-denoma@usgs.gov Phone: 303-236-5454 Fax: 303-236-3200 Lakewood, CO 80225 Biography  

Donald Sweetkind

https://www.usgs.gov/staff-profiles/donald-sweetkind?field_publication_year_value%5Bvalue%5D&field_state_tid=All&page=2&sort_bef_combine=field_publication_year_value%20DESC&sort_by=Apply&sort_order=Filter (HTML Document 46.97 KB)

Lakewood, CO 80225

Donald Sweetkind

https://www.usgs.gov/staff-profiles/donald-sweetkind?field_publication_year_value%5Bvalue%5D&field_state_tid=All&page=1&sort_bef_combine=field_publication_year_value%20DESC&sort_by=Apply&sort_order=Filter (HTML Document 46.97 KB)

Lakewood, CO 80225

Christopher Holm-Denoma

https://www.usgs.gov/staff-profiles/christopher-holm-denoma (HTML Document 44.06 KB)

Email: cholm-denoma@usgs.gov Phone: 303-236-5454 Fax: 303-236-3200 Lakewood, CO 80225 Biography  

Gregory Walsh

https://www.usgs.gov/node/719892 (HTML Document 44.22 KB)

Biography I am a Project Chief and a Research Geologist with the Eastern Geology & Paleoclimate Science Center. I manage bedrock geologic mapping ... activities for the USGS in the northeastern United States. I managed two international mapping projects in Morocco and the completion of the new bedrock geologic map of Vermont, and conducted mapping Madagascar.   ...

Shallow seismic imaging of folds above the Puente Hills blind-thrust fault, Los Angeles, California

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70024688 (HTML Document 18.30 KB)

geometry and kinematics of recent folding. The Santa Fe Springs segment of the Puente Hills fault zone shows an upward-narrowing kink band with an active ... anticlinal axial surface, consistent with fault-bend folding above an active thrust ramp. The Coyote Hills segment shows an active synclinal axial ... surface that coincides with the base of a 9-m-high scarp, consistent with tip-line folding or the presence of a backthrust. The seismic profiles pinpoint ... targets for future geologic work to constrain slip rates and ages of past events on this important fault system. Additional publication details Title ...

Gregory Walsh

https://www.usgs.gov/staff-profiles/gregory-walsh (HTML Document 44.22 KB)

Biography I am a Project Chief and a Research Geologist with the Eastern Geology & Paleoclimate Science Center. I manage bedrock geologic mapping ... activities for the USGS in the northeastern United States. I managed two international mapping projects in Morocco and the completion of the new bedrock geologic map of Vermont, and conducted mapping Madagascar.   ...

High-resolution seismic reflection imaging of growth folding and shallow faults beneath the Southern Puget Lowland, Washington State

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70037090 (HTML Document 21.16 KB)

postglacial growth folding above a blind fault. Geologic data across a topographic lineament on nearby land indicate recent uplift of late Holocene age ... High-resolution seismic reflection imaging of growth folding and shallow faults beneath the Southern Puget Lowland, Washington State Bulletin of the ... nature of shallow structures associated with the Tacoma fault zone and the Olympia structure. Growth folding and probable Holocene surface deformation ... of growth folding and shallow faults beneath the Southern Puget Lowland, Washington State Series title: DOI: 10.1785/0120080306 Volume: 100 Issue: 4 First page: ...

The nature and timing of tectonism in the western facies terrane of Nevada and California; an outline of evidence and interpretations derived from geologic maps of key areas

Modified 2017-01-18
https://pubs.er.usgs.gov/publication/pp1592 (HTML Document 18.45 KB)

geologic maps of key areas Professional Paper 1592 Abstract Along the outer miogeocline of Nevada and Southern California, lower Paleozoic siliceous ... Antler Orogeny, involved intense folding and thrust faulting is notably scarce. Almost all the intense folding and thrust faulting of Proterozoic to ... terrane of Nevada and California; an outline of evidence and interpretations derived from geologic maps of key areas Series title: Professional Paper ...

High-resolution seismic reflection imaging of growth folding and shallow faults beneath the Southern Puget Lowland, Washington State

Modified 2016-06-21
https://pubs.er.usgs.gov/publication/70173983 (HTML Document 25.20 KB)

High-resolution seismic reflection imaging of growth folding and shallow faults beneath the Southern Puget Lowland, Washington State Bulletin of the ... the Tacoma fault zone and the Olympia structure. Growth folding and probable Holocene surface deformation were imaged within the Tacoma fault zone ... increasing stratal dips with increasing depth are consistent with late Pleistocene to Holocene postglacial growth folding above a blind fault ... . Geologic data across a topographic lineament on nearby land indicate recent uplift of late Holocene age. Profiles acquired in Carr Inlet 10 km to the east of ...

Geologic processes of accretion in the Cascadia subduction zone west of Washington State

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70021885 (HTML Document 19.82 KB)

Geologic processes of accretion in the Cascadia subduction zone west of Washington State Journal of Geodynamics By: M.A. Fisher, E.R. Flueh, D. W ... off Washington, thrust faults in the toe verge consistently landward, except near the mouth of the Columbia River where detachment folding of accreted ... detachment folding, diapirs, and landward-vergent thrust faults all suggest that nearly as far landward as the shelf break, coupling along the interplate ... decollement is, or has been, low, as suggested by other lines of evidence. Additional publication details Title: Geologic processes of accretion in the Cascadia subduction zone west of Washington State Series title: ...

Influence of tectonic folding on rockfall susceptibility, American Fork Canyon, Utah, USA

Modified 2013-02-21
https://pubs.er.usgs.gov/publication/70032022 (HTML Document 18.61 KB)

Influence of tectonic folding on rockfall susceptibility, American Fork Canyon, Utah, USA Natural Hazards and Earth System Science By: Abstract We ... geologic mapping, talus production data, rock-mass-quality measurements, and historical rockfall data indicate that rockfall susceptibility is correlated ... flexural slip during folding that has reduced the friction angles of discontinuities by smoothing surface asperities. Susceptibility is greater in fold ... increases in hinge zones as fold curvature becomes tighter. Additional publication details Influence of tectonic folding on rockfall susceptibility ...

Evolution of fracture and fault-controlled fluid pathways in carbonates of the Albanides fold-thrust belt

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70028047 (HTML Document 20.86 KB)

sample, outcrop, and geologic-map scales. The function of fractures and faults in fluid migration was elucidated using calcite cement and bitumen in ... mechanical layers associated with folding resulted in the formation of a series of folding assemblage fractures at different orientations, depending on the ... slip direction of individual mechanical layers. Prefolding- and folding-related fracture assemblages together formed fragmentation zones in ...

Preliminary geologic investigation of the West Glendive lignite deposits, Dawson County, Montana

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/ofr79275 (HTML Document 18.85 KB)

Preliminary geologic investigation of the West Glendive lignite deposits, Dawson County, Montana Open-File Report 79-275 Abstract Four major lignite ... the Peuse bed is the thickest and most extensive. Field mapping and drill-hole data indicate that folding and faulting are more common than previously ... reported. Additional publication details Preliminary geologic investigation of the West Glendive lignite deposits, Dawson County, Montana Series title ...

Geologic and Fossil Locality Maps of the West-Central Part of the Howard Pass Quadrangle and Part of the Adjacent Misheguk Mountain Quadrangle, Western Brooks Range, Alaska

Modified 2012-02-10
https://pubs.er.usgs.gov/publication/mf2413 (HTML Document 20.12 KB)

Geologic and Fossil Locality Maps of the West-Central Part of the Howard Pass Quadrangle and Part of the Adjacent Misheguk Mountain Quadrangle ... margin depositional environments, and subsequently underwent a complexde formational history of imbricate thrust faulting and folding. A compilation of ... micro and macro fossil identifications is included in this data set. Study Area Title: Geologic and Fossil Locality Maps of the West-Central Part of ...

Arthur Merschat

https://www.usgs.gov/staff-profiles/arthur-merschat (HTML Document 43.83 KB)

terranes of the Blue Ridge and Piedmont; and (3) the thermochronologic evolution of the orogen.  I have integrated geologic mapping, structural ... analysis, SHRIMP U-Pb geochronology, petrology, and geochemistry into my research.  Currently, I am involved with bedrock geologic mapping projects in the ...

Arthur Merschat

https://www.usgs.gov/node/720219 (HTML Document 43.83 KB)

terranes of the Blue Ridge and Piedmont; and (3) the thermochronologic evolution of the orogen.  I have integrated geologic mapping, structural ... analysis, SHRIMP U-Pb geochronology, petrology, and geochemistry into my research.  Currently, I am involved with bedrock geologic mapping projects in the ...

Robert Stamm

https://www.usgs.gov/staff-profiles/robert-stamm (HTML Document 46.72 KB)

Geologic Studies Group (SGSG; former Branch of Military Geology) in support of world-wide DoD missions. ...

Robert Stamm

https://www.usgs.gov/node/720153 (HTML Document 46.72 KB)

Geologic Studies Group (SGSG; former Branch of Military Geology) in support of world-wide DoD missions. ...

Preliminary geologic map of the Bowen Mountain quadrangle, Grand and Jackson Counties, Colorado

Modified 2012-02-10
https://pubs.er.usgs.gov/publication/ofr20111111 (HTML Document 22.44 KB)

Preliminary geologic map of the Bowen Mountain quadrangle, Grand and Jackson Counties, Colorado Open-File Report 2011-1111 James C. Cole, William A ... Park Formation. The folding and faulting appears to reflect a singular contractional deformation (post-Middle Park, so probably younger than early ... Eocene) that produced en echelon structural uplift of the Proterozoic basement of the Front Range. The geologic map indicates there is no through-going ... uplift and erosion in middle Tertiary time. Study Area Title: Preliminary geologic map of the Bowen Mountain quadrangle, Grand and Jackson Counties, Colorado Series title: Open-File Report Series number: Description: First page: ...