Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Francis J. Sousa"'
Publikováno v:
Sensors, Vol 23, Iss 15, p 6742 (2023)
A geologic map is both a visual depiction of the lithologies and structures occurring at the Earth’s surface and a representation of a conceptual model for the geologic history in a region. The work needed to capture such multifaced information in
Externí odkaz:
https://doaj.org/article/f726b9ffc7da4a35ac50fef87e385cb5
Autor:
Francis J. Sousa, Stephen E. Cox, Sidney R. Hemming, E. Troy Rasbury, Elena Steponaitis, Kevin Hatton, Mae Saslaw, Gregory Henkes, Patricia Princehouse, Natasha S. Vitek, Isaiah Nengo
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
New field observations and 40Ar/39Ar geochronology reveal that the Topernawi Formation of the Ekitale Basin, northern Turkana Depression, Turkana County, Kenya was deposited entirely during the Oligocene between 29.7 ± 0.5 Ma and 29.24 ± 0.08 Ma. T
Externí odkaz:
https://doaj.org/article/1eba6908fc9644fb8ff1a32d9f5cdc48
Autor:
Francis J. Sousa, Daniel J. Sousa
Publikováno v:
Remote Sensing, Vol 14, Iss 19, p 4914 (2022)
We use a classic locale for geology education in the White Mountains, CA, to demonstrate a novel approach for using imaging spectroscopy (hyperspectral imaging) to generate base maps for the purpose of geologic mapping. The base maps produced in this
Externí odkaz:
https://doaj.org/article/45f4a6e0b72849c891e15cffabb84928
Autor:
Ellen A. Lamont, Francis J. Sousa, Andrew J. Meigs, Ramakrishna Jayangondaperumal, Rebecca M. Flowers, Aravind Anilkumar, Danielle Woodring, Edward R. Sobel
Publikováno v:
Terra Nova. 35:41-48
Autor:
Francis J. Sousa, Kenneth A. Farley
Publikováno v:
Minerals, Vol 10, Iss 12, p 1111 (2020)
This paper presents a framework for evaluating variation in (U-Th)/He datasets. The framework is objective, repeatable, and based on compatibility of thermal histories derived from individual (U-Th)/He dates. The structure of this new method includes
Externí odkaz:
https://doaj.org/article/f4b7bc07baf944baa1c17e472aa08d01
Autor:
Rebecca A. Witkosky, Joann M. Stock, David M. Tratt, Kerry N. Buckland, Paul M. Adams, Patrick D. Johnson, David K. Lynch, Francis J. Sousa
Publikováno v:
Remote Sensing, Vol 12, Iss 21, p 3586 (2020)
The 1999 Hector Mine earthquake ruptured to the surface in eastern California, with >5 m peak right-lateral slip on the Lavic Lake fault. The cumulative offset and geologic slip rate of this fault are not well defined, which inhibits tectonic reconst
Externí odkaz:
https://doaj.org/article/db68cf4e06e64a79b940768ce24ef64d
Autor:
Francis J. Sousa, Daniel J. Sousa
Publikováno v:
Remote Sensing, Vol 11, Iss 21, p 2528 (2019)
Visible through shortwave (VSWIR) spectral reflectance of the geologic units across the basal Tertiary nonconformity (BTN) is characterized at three spatially disparate locations in California. At two of these sites, location-specific spectral endmem
Externí odkaz:
https://doaj.org/article/ad94fb4ffb2c4c86a66fac664c629b1f
Autor:
Francis J. Sousa
Publikováno v:
Geosciences, Vol 9, Iss 5, p 194 (2019)
Bedrock (U-Th)/He data reveal an Eocene exhumation difference greater than four kilometers athwart Owens Valley, California near the Alabama Hills. This difference is localized at the eastern fault-bound edge of the valley between the Owens Valley Fa
Externí odkaz:
https://doaj.org/article/0ff5bc71ad854599b233513256455fc4
Autor:
Patrick D. Johnson, Paul M. Adams, Francis J. Sousa, Rebecca A. Witkosky, David K. Lynch, Kerry N. Buckland, Joann M. Stock, David M. Tratt
Publikováno v:
Remote Sensing, Vol 12, Iss 3586, p 3586 (2020)
Remote Sensing
Volume 12
Issue 21
Remote Sensing
Volume 12
Issue 21
The 1999 Hector Mine earthquake ruptured to the surface in eastern California, with >
5 m peak right-lateral slip on the Lavic Lake fault. The cumulative offset and geologic slip rate of this fault are not well defined, which inhibits tectonic
5 m peak right-lateral slip on the Lavic Lake fault. The cumulative offset and geologic slip rate of this fault are not well defined, which inhibits tectonic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c41f14d23676ef2ed3015428f08eedf
https://resolver.caltech.edu/CaltechAUTHORS:20201105-160425687
https://resolver.caltech.edu/CaltechAUTHORS:20201105-160425687
This paper presents new apatite fission track (AFT) and apatite (U-Th)/He (AHe) data from the Duolong ore district. The corresponding AFT and AHe ages provide insights into the uplift and exhumation history of the Duolong ore district, revealing rapi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dc2dbdfca70d4459b05ba6894bd04ac