Imperial College London
Portrait Picture

Professor Gary Hampson

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Sedimentary Geology
 
 
 
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Contact

 

+44 (0)20 7594 6475g.j.hampson Website

 
 
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Location

 

1.42Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lupin:2020:10.2110/jsr.2020.044,
author = {Lupin, J and Hampson, G},
doi = {10.2110/jsr.2020.044},
journal = {Journal of Sedimentary Research},
pages = {1389--1409},
title = {Sediment-routing controls on sandstone bulk petrographic composition and texture across an ancient shelf: example from Cretaceous Western Interior Basin, Utah and Colorado, USA},
url = {http://dx.doi.org/10.2110/jsr.2020.044},
volume = {90},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Sediment-routing controls on sandstone texture and bulk petrography have been evaluated in linked alluvial-coastal-shelfal deposits of the Upper Cretaceous Castlegate Sandstone, Blackhawk Formation, Star Point Sandstone, and Mancos Shale (Western Interior Basin, Utah and Colorado, USA) using thin-section analysis of representative outcrop samples in the context of a high-resolution sequence stratigraphic and paleogeographic framework. The studied strata record deposition from two styles of sediment-routing system within an overfilled foredeep and contiguous intra-continental seaway. First, multiple transverse drainages supplied sand to fluvial, shoreline, and shelf segments of sediment-routing systems characterized by down-dip transport distances of 150-450 km and significant strike-oriented sediment transport along the shoreline. Second, the distal shoreline-shelf segment of an axially supplied sediment-routing system was characterized by sand transport for a distance of c. 300 km.Bulk petrographic composition indicates that transverse sediment-routing systems were sourced from catchments that supplied quartz-rich sand with a subordinate lithic component, while the large axial sediment-routing system was sourced from a catchment(s) supplying slightly more feldspathic sand. Thin-section measurements of mean grain size, sorting, skewness, and ratio of minimum-to-maximum diameter (a proxy for sphericity) are similar for sandstones deposited in fluvial, shoreline and shelf segments of the transverse sediment-routing systems and in the shoreline-shelf segment of the axial sediment-routing systems, although hydrodynamic sorting is important in locally segregating grain-size populations within each segment. Further, textural analysis of detrital quartz, feldspar, and lithic sand-grain populations shows little evidence of relative change in mean grain size or apparent grain sphericity with downsystem distance, implying that sand-grain populations of different petrographic
AU  - Lupin,J
AU  - Hampson,G
DO  - 10.2110/jsr.2020.044
EP  - 1409
PY  - 2020///
SN  - 1527-1404
SP  - 1389
TI  - Sediment-routing controls on sandstone bulk petrographic composition and texture across an ancient shelf: example from Cretaceous Western Interior Basin, Utah and Colorado, USA
T2  - Journal of Sedimentary Research
UR  - http://dx.doi.org/10.2110/jsr.2020.044
UR  - https://pubs.geoscienceworld.org/sepm/jsedres/article/90/10/1389/593115/Sediment-routing-controls-on-sandstone-bulk
UR  - http://hdl.handle.net/10044/1/81500
VL  - 90
ER  -
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