Results 71 to 80 of about 138,394 (310)

Provenance of sedimentary rocks [PDF]

, 2009
Understanding the origins, or provenance, of a sedimentary deposit is an important aspect of geology. Sedimentary rocks are derived from the erosion of other rocks and thus provide important records of the geological environment at the time they were ...
Moloney, Paul, Pritchard, Geoffrey, Russell, Ken, Whiten, Bill   +3 more
core   +1 more source

Fault Slip and Exhumation History of the Willard Thrust Sheet, Sevier Fold‐Thrust Belt, Utah: Relations to Wedge Propagation, Hinterland Uplift, and Foreland Basin Sedimentation [PDF]

, 2019
Zircon (U‐Th)/He (ZHe) and zircon fission track thermochronometric data for 47 samples spanning the areally extensive Willard thrust sheet within the western part of the Sevier fold‐thrust belt record enhanced cooling and exhumation during major thrust ...
Barber, D. E., Eleogram, Bryan, Kelley, Shari, Stockli, Daniel F., Wells, Michael L., Yonkee, W. A.   +5 more
core   +2 more sources

Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China

Geological Journal, EarlyView.
Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Jie Zhang   +4 more
wiley   +1 more source

Sources of bias in detrital zircon geochronology: Discordance, concealed lead loss and common lead correction

Earth-Science Reviews, 2019
The distribution pattern of U Pb ages of detrital zircon in a sedimentary rock is commonly assumed to reflect the ages of igneous or metamorphic processes in rocks that have contributed material to the sedimentary basin (i.e.
T. Andersen, M. Elburg, Boniswa N. Magwaza   +2 more
semanticscholar   +1 more source

The Feasibility of Reclaiming Shell Material from Investment Casting [PDF]

, 1992
This report examines the feasibility of investment shell component reclamation. Shell material components and their compositions are investigated with an industry survey, a study of the available literature, and analysis of specimen shell materials ...
Peters, Timothy M., Twarog, Daniel L.
core  

Thermochronology of the modern Indus River bedload: New insight into the controls on the marine stratigraphic record [PDF]

, 2004
The Indus River is the only major drainage in the western Himalaya and delivers a long geological record of continental erosion to the Arabian Sea, which may be deciphered and used to reconstruct orogenic growth if the modern bedload can be related to ...
Ali Athar Khan, Anczkiewicz, Andrew Carter, Ballard, Black, Brookfield, Carpena, Carter, Carter, Charlotte M. Allen, Cherniak, Clift, Clift, Clift, Compston, Copeland, Copeland, Corrigan, Cumming, DeCelles, Dunlap, Finlayson, Fontan, Foster, Fraser, Galy, Garzanti, Garzanti, George, Green, Guillot, Harrison, Hirata, Hodges, Hodges, Hodges, Honegger, Horn, Hubbard, Ian H. Campbell, Jain, Kip V. Hodges, Koppers, Krol, Krol, Kumar, Lee, Malcolm S. Pringle, Maluski, Metcalfe, Molnar, Moore, Najman, Najman, Noble, Parrish, Parrish, Pearce, Peter D. Clift, Poupeau, Renne, Rowley, Schärer, Schärer, Searle, Searle, Searle, Searle, Searle, Searle, Sorkhabi, Sorkhabi, Stephenson, Stüwe, Stüwe, Treloar, Treloar, Vannay, Villa, Walker, Weinberg, White, Winslow, Xifan Zhang, Zeilinger, Zeitler, Zeitler, Zeitler, Zeitler, Zeitler, Zhang   +90 more
core   +2 more sources

Thermochronologic Constraints on the Extensional History of the Ibex Hills, Southeastern Black Mountains, Death Valley, California

Geological Journal, EarlyView.
A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley   +1 more source

Patterns of Late Cenozoic exhumation deduced from apatite and zircon U-He ages from Fiordland, New Zealand [PDF]

, 2005
New apatite and zircon (U-Th)/He ages from the Fiordland region of New Zealand's South Island expand on earlier results and provide new constraints on patterns of Late Cenozoic exhumation and cooling across this region.
Gurnis, M., House, M. A., Kamp, P. J. J., Sutherland, R.   +3 more
core   +2 more sources

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

Exhumation history of the Higher Himalayan Crystalline along Dhauliganga-Goriganga river valleys, NW India: new constraints from fission track analysis [PDF]

, 2009
New apatite and zircon fission track data collected from two transects along the Dhauliganga and Goriganga rivers in the NW Himalaya document exhumation of the Higher Himalayan Crystalline units. Despite sharing the same structural configuration and rock
A. Carter, Ahmad, Beaumont, Blythe, Bojar, Bollinger, Bookhagen, Bouchez, Brandon, Braun, Burbank, Burchfiel, Burg, Davidson, Dezes, Ehlers, Foster, Galbraith, Gansser, Garzanti, Grujic, Gururajan, Heim, Herren, Hodges, Hodges, Hubbard, Huntington, Hurford, Hurford, Jain, Jain, Jain, Jain, Lal, Leech, Mancktelow, Metcalfe, Molnar, Patel, Patriat, Paul, R. C. Patel, Rao, Ray, Rowley, Roy, Schlup, Searle, Searle, Seitz, Singh, Sorkhabi, Srivastava, Stern, Stüwe, Thakur, Thiede, Thiede, Thiede, Valdiya, Vannay, Whipp, Whipp, Whipple, Whipple, Yin   +66 more
core   +1 more source