干旱区生态环境知识资源中心(Arid): Constraints on rock uplift in the eastern Transverse Ranges and northern Peninsular Ranges and implications for kinematics of the San Andreas fault in the Coachella Valley, California, USA

Arid

DOI	10.1130/GES02160.1
	Constraints on rock uplift in the eastern Transverse Ranges and northern Peninsular Ranges and implications for kinematics of the San Andreas fault in the Coachella Valley, California, USA
	Spotila, James A.1; Mason, Cody C.2; Valentino, Joshua D.3; Cochran, William J.4
通讯作者	Spotila, James A.
来源期刊	GEOSPHERE
ISSN	1553-040X
出版年	2020
卷号	16 期号:3 页码:723-750
英文摘要	The nexus of plate-boundary deformation at the northern end of the Coachella Valley in southern California (USA) is complex on multiple levels, including rupture dynamics, slip transfer, and three-dimensional strain partitioning on nonvertical faults (including the San Andreas fault). We quantify uplift of mountain blocks in this region using geomorphology and low-temperature thermochronometry to constrain the role of long-term vertical deformation in this tectonic system. New apatite (U-Th)/He (AHe) ages confirm that the rugged San Jacinto Mountains (SJM) do not exhibit a record of rapid Neogene exhumation. In contrast, in the Little San Bernardino Mountains (LSBM), rapid exhumation over the past 5 m.y. is apparent beneath a tilted AHe partial retention zone, based on new and previously published data. Both ranges tilt away from the Coachella Valley and have experienced minimal denudation from their upper surface, based on preservation of weathered granitic erosion surfaces. We interpret rapid exhumation at 5 Ma and the gentle tilt of the erosion surface and AHe isochrons in the LSBM to have resulted from rift shoulder uplift associated with extension prior to onset of transpression in the Coachella Valley. We hypothesize that the SJM have experienced similar rift shoulder uplift, but an additional mechanism must be called upon to explain the pinnacle-like form, rugged escarpment, and topographic disequilibrium of the northernmost SJM massif. We propose that this form stems from erosional resistance of the Peninsular Ranges batholith relative to more-erodible foliated metamorphic rocks that wrap around it. Our interpretations suggest that neither the LSBM nor SJM have been significantly uplifted under the present transpressive configuration of the San Andreas fault system, but instead represent relict highs due to previous tectonic and erosional forcing.
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000537454500002
WOS关键词	GULF-OF-CALIFORNIA ; SIERRA-NEVADA BATHOLITH ; CRUSTAL THICKNESS VARIATIONS ; SOUTHERN CALIFORNIA ; (U-TH)/HE THERMOCHRONOMETRY ; BERNARDINO MOUNTAINS ; MOJAVE DESERT ; TECTONIC EVOLUTION ; THERMAL EVOLUTION ; HEAT-PRODUCTION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319229
作者单位	1.Virginia Tech, Dept Geosci, 4044 Derring Hall, Blacksburg, VA 24061 USA; 2.Univ West Georgia, Dept Geosci, Callaway Bldg,1601 Maple St, Carrollton, GA 30118 USA; 3.GeoConcepts Engn Inc, 19955 Highland Vista Dr,Suite 170, Ashburn, VA 20147 USA; 4.Fugro, 101 West Main St,Suite 350, Norfolk, VA 23504 USA
推荐引用方式 GB/T 7714	Spotila, James A.,Mason, Cody C.,Valentino, Joshua D.,et al. Constraints on rock uplift in the eastern Transverse Ranges and northern Peninsular Ranges and implications for kinematics of the San Andreas fault in the Coachella Valley, California, USA[J],2020,16(3):723-750.
APA	Spotila, James A.,Mason, Cody C.,Valentino, Joshua D.,&Cochran, William J..(2020).Constraints on rock uplift in the eastern Transverse Ranges and northern Peninsular Ranges and implications for kinematics of the San Andreas fault in the Coachella Valley, California, USA.GEOSPHERE,16(3),723-750.
MLA	Spotila, James A.,et al."Constraints on rock uplift in the eastern Transverse Ranges and northern Peninsular Ranges and implications for kinematics of the San Andreas fault in the Coachella Valley, California, USA".GEOSPHERE 16.3(2020):723-750.