Provenance of the upper Miocene Modelo Formation and subsidence analysis of the Los Angeles basin, southern California: Implications for paleotectonic and paleogeographic reconstructions

Rumelhart, Peter E.; Ingersoll, Raymond V.

doi:10.1130/0016-7606(1997)109<0885:potumm>2.3.co;2

Cited by 28 publications

(16 citation statements)

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“…The mean composition of 5-3 Ma sands (Q 29 F 48 L 23 ) at Site 467 is almost identical to the mean composition of late Miocene (9-6 Ma) sandstones (Modelo Formation, Simi Fan; Fellbaum and Fritsche, 1993;Rumelhart and Ingersoll, 1997) in the Santa Monica Mountains (Q 29 F 46 L 25 ) as determined by Lane (1993). Thus, their source was similar to that of the Western Transverse Ranges.…”

Section: Northern Outer Borderlandmentioning

confidence: 93%

Evidence for interaction of a spreading ridge with the outer California borderland

et al. 2006

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Section: Northern Outer Borderlandmentioning

confidence: 93%

Evidence for interaction of a spreading ridge with the outer California borderland

et al. 2006

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“…As in the San Bernardino Mountains, we estimate average, long-term erosion rates that span the entire duration of uplift, which we assume to be ϳ6 m.y. (Rumelhart and Ingersoll, 1997;Blythe et al, 2000). Because the San Gabriel Mountains have experienced a longer period of construction, equal rates of erosion in these mountains are of course associated with more than double the total denudation than in their younger counterpart.…”

Section: Erosion Pattern In the San Gabriel Mountainsmentioning

confidence: 97%

“…In contrast, the San Gabriel Mountains have experienced rapid transpressive uplift for the past 5-7 m.y. (Crowell, 1982;Dibblee, 1982a;Wright, 1991;Bull, 1991;Rumelhart and Ingersoll, 1997;Blythe et al, 2000). Perhaps most striking are the differences between their topographic expressions.…”

Section: Introductionmentioning

confidence: 93%

Controls on the erosion and geomorphic evolution of the San Bernardino and San Gabriel Mountains, southern California

Spotila

Blythe

Niemi

et al. 2002

Contributions to Crustal Evolution of the Southwestern United States

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We have investigated what controls geomorphic evolution of active mountain belts by comparing the patterns of erosion in the San Gabriel and San Bernardino Mountains of southern California. These siblings in the Central Transverse Ranges are juxtaposed across the San Andreas fault and have been tectonically uplifted since the late Miocene under roughly similar conditions, yet their geomorphic expressions are very different. Because these ranges share numerous boundary conditions and because their syn-uplift exhumation is constrained by thermochronometric and geologic data, they provide a template to explore the role of specific parameters on the erosion of mountains. To address this, existing constraints on long-term exhumation are synthesized and used to construct best-guess models of erosion patterns in each range. These patterns of erosion are then compared to variables that are generally considered to be important influences on erosion rate. Erosion rate is correlated with topographic slope, suggesting that the two are coupled and that the questions of what controls erosion and what controls topography are interchangeable. Erosion patterns are also strongly influenced by the distribution of active structures, suggesting that deformation alone may be responsible for the observed patterns within each range. However, additional correlations with erosion exist in bedrock erodibility and mean annual precipitation. Altogether, broad differences between the two ranges may be explained by either structure, bedrock erodibility, long-term precipitation, or the greater duration of uplift of the San Gabriel Mountains. All of the boundary conditions that are generally considered important in the erosion of mountains are thus found to be related to erosion patterns in the Central Transverse Ranges. Without a

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“…It has been documented in nearby Xinjiang Province, China, that modern sands from the Junggar, Turpan, and Tarim basins plot within arc fields on Qm-F-Lt, Qt-F-L, and Qp-LvtLsm diagrams, although they are not currently near an active arc; their source area contains uplifted, exposed Paleozoic arc deposits (Graham et al, 1993). Recent studies have also documented that global sandstone provenance fields are not always applicable to basins that receive sediment from a more localized source or a source composed of accreted terranes: sandstones from such basins plot within fields that reflect the relict tectonic setting of the source area rocks and not necessarily the tectonic setting of the source area at the time of deposition (e.g., Trop and Ridgway, 1997;Rumelhart and Ingersoll, 1997;Hendrix, 2000). Additional work on the Permian sandstones, possible local volcanic source rocks, and the basin geometries is needed to better interpret these provenance data.…”

Section: Permianmentioning

confidence: 98%

Paleozoic sedimentary basins and volcanic arc systems of southern Mongolia: New geochemical and petrographic constraints

Lamb¹,

Badarch²

2001

Paleozoic and Mesozoic Tectonic Evolution of Central and Eastern Asia: From Continental Assembly to Intracontinental Deformatio

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Paleozoic strata of southern Mongolia record significant portions of the geologic development of Central Asia but have only been studied by a handful of workers. In this chapter we present new data from these rocks and address key questions concerning the Paleozoic development of southern Mongolia and its relation to geologic events in China.Major and trace element geochemical analyses of basalts from southern Mongolia suggest formation in volcanic arc, backarc basin, and within plate settings during the Devonian through Permian time periods. Sandstone provenance data from 12 localities document volcanic activity and record a shift from mature, quartzose Ordovician and Silurian sandstones to immature, volcanic lithic-rich Devonian and Carboniferous sandstones. Permian sandstone data point to volcanic activity and uplift of the Devonian and Carboniferous arc material.These new data, combined with other sedimentologic and stratigraphic data, allow for better constrained tectonic models and paleogeographic reconstructions. Devonian strata of southern Mongolia represent components of two arc systems, including a trapped ocean basin that developed into a backarc basin. Carboniferous rocks record the development of a large arc system in southernmost Mongolia that may have extended westward into the Bogda Shan volcanic arc of China. The Carboniferous arc was probably a continuation of the Devonian arc system and was built in part upon Devonian strata. Permian strata record mainly nonmarine basins and the closing of the ocean basin between southern Mongolia and tectonic blocks of China.

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Provenance of the upper Miocene Modelo Formation and subsidence analysis of the Los Angeles basin, southern California: Implications for paleotectonic and paleogeographic reconstructions

Cited by 28 publications

References 0 publications

Evidence for interaction of a spreading ridge with the outer California borderland

Evidence for interaction of a spreading ridge with the outer California borderland

Controls on the erosion and geomorphic evolution of the San Bernardino and San Gabriel Mountains, southern California

Paleozoic sedimentary basins and volcanic arc systems of southern Mongolia: New geochemical and petrographic constraints

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