Thermal subsidence and eustasy in the Lower Palaeozoic miogeocline of western North America

Bond, Gérard C.; Kominz, Michelle A.; Devlin, William J.

doi:10.1038/306775a0

Cited by 64 publications

(44 citation statements)

References 15 publications

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“…In contrast, thermal subsidence modeling of the Cambrian strata in the Great Basin would suggest some sort of thermal event, followed by thermal sub sidence of the shelf, ~625 to 540 Ma (Bond et al, 1983). Except for a few lava flows reported from the Stirling Quartzite (Stewart, 1974), obvious geologic evidence for the inferred tectonic event at this time is absent in the southern Great Basin (Cooper and Fedo, 1998).…”

Section: Possible Causes For the Unconformitiesmentioning

confidence: 88%

Using Chemostratigraphy to Correlate and Calibrate Unconformities in Neoproterozoic Strata from the Southern Great Basin of the United States

Corsetti

Awramik

Pierce

et al. 2000

International Geology Review

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An integrative approach combining carbon-isotope stratigraphy, biostratigraphy, and sequence stratigraphy was used to correlate between and place tentative age constraints on previously undated Neoproterozoic-Cambrian units of the Death Valley and White-Inyo successions, southern Great Basin, United States. Two regionally correlatable disconformities have been identified in the poorly fossiliferous, pre-trilobite strata. By comparing the carbon-isotope trends in the succession to a hypothetical global reference curve, the temporal magnitude of each hiatus can be postulated. The younger hiatus approaches 30 m.y. in duration and separates strata (Hines Tongue/basal Stirling unconformity) between 580 Ma and 550 Ma. The older hiatus represents ~10 m.y. and separates strata (Wyman-Reed and upper Johnnie unconformity) between ~590 and 580 Ma. The unconformi ties may be related to global sea-level fluctuations in response to Neoproterozoic ("Snowball Earth") glacial events or tectonic activity as predicted by thermal subsidence models, and as such, may provide critical data to evaluate these global phenomena.

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Section: Possible Causes For the Unconformitiesmentioning

confidence: 88%

Using Chemostratigraphy to Correlate and Calibrate Unconformities in Neoproterozoic Strata from the Southern Great Basin of the United States

Corsetti

Awramik

Pierce

et al. 2000

International Geology Review

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“…We used the method of Angevine et al (1990), which is adapted from previous studies (Van Hinte, 1978;Sclater and Christie, 1980;Bond et al, 1983). This approach assumes that porosity varies as a function of depth and lithology, and that pore spaces are interconnected (i.e., no overpressured zones).…”

Section: Decompaction and Backstrippingmentioning

confidence: 99%

“…This approach assumes that porosity varies as a function of depth and lithology, and that pore spaces are interconnected (i.e., no overpressured zones). The decompaction algorithm employs empirically derived, lithologydependent, porosity-depth relationships that follow an exponential decrease in porosity with depth (e.g., Sclater and Christie, 1980;Bond et al, 1983). The section was decompacted by calculating the effects of removing successively older units from the top and allowing the section to expand as underlying units are unloaded.…”

Section: Decompaction and Backstrippingmentioning

confidence: 99%

Stratigraphic record of basin development within the San Andreas fault system: Late Cenozoic Fish Creek-Vallecito basin, southern California

Dorsey

Housen

Jänecke

et al. 2011

Geological Society of America Bulletin

181

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The Fish Creek-Vallecito basin contains a 5.5-km-thick section of late Miocene to early Pleistocene sedimentary rocks exposed in the hanging wall of the West Salton detachment fault. These deposits preserve a high-fi delity record of late Cenozoic subsidence and basin fi lling that resulted from deformation in the San Andreas fault system of southern California. Existing and new paleomagnetic data, combined with new U-Pb zircon ages of two tuffs high in the section, show that the section ranges in age from ca. 8.0 ± 0.4 Ma at the base to ca. 0.95 Ma at the top. Geohistory analysis reveals: (1) moderate subsidence (0.46 mm/yr) from ca. 8.0 to 4.5 Ma; (2) rapid subsidence (2.1 mm/yr) from 4.5 to 3.1 Ma; (3) moderate subsidence (0.40 mm/yr) from 3.1 to 0.95 Ma; and (4) rapid uplift and erosion that has exhumed the section since ca. 1 Ma. Onset of sedimentation at ca. 8.0 ± 0.4 Ma records earliest extension or transtension in the area, possibly related to localization of the Pacifi c-North America plate boundary in the Salton Trough and Gulf of California. Alternatively, marine incursion at 6.3 Ma may be the earliest record of plate-boundary deformation in the Gulf of California-Salton Trough region. A thick interval higher in the section records progradation of the Colorado River delta into and across the basin starting ca. 4.9 Ma. Progradation continued during an abrupt increase in subsidence rate at 4.5 Ma, and fl uvial-deltaic conditions persisted for 1.4 m.y. during the rapid-subsidence phase, indicating that delta progradation was driven by a large increase in rate of sediment input from the Colorado River. Uplift and inversion of the basin starting ca.

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“…As noted in reviews by Ross (1991), Gabrielse and Campbell (1992), and Link et al (1993), western North America underwent a Cordilleranlong extensional event in the Neoproterozoic marked by deposition of the Windermere Supergroup, its stratigraphic equivalents, and concomitant igneous rocks. Along with subsequent extension in the early Paleozoic (Bond and Kominz 1984), the Windermere event is generally regarded as an interval of continental rifting and separation by sea-floor spreading.…”

Section: Continental Considerationsmentioning

confidence: 99%

Early Proterozoic magmatism in Yukon, Canada: constraints on the evolution of northwestern Laurentia

et al. 2001

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Northwestern Laurentia, after cratonization at about 1.85 Ga, underwent a series of tectonic and magmatic events during the Proterozoic that were followed by separation of Laurentia from another landmass, probably Australia. The oldest magmatic event produced the Bonnet Plume River Intrusions (BPRI), which intruded the Wernecke Supergroup as short dikes and small stocks. The BPRI are hydrothermally altered tholeiitic diorites, gabbros, and subordinate anorthositic and syenitic rocks, with trace element signatures consistent with a rift origin. Depleted mantle model ages range from 2.29 to 2.57 Ga and ε Nd values range from +0.7 to -1

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Thermal subsidence and eustasy in the Lower Palaeozoic miogeocline of western North America

Cited by 64 publications

References 15 publications

Using Chemostratigraphy to Correlate and Calibrate Unconformities in Neoproterozoic Strata from the Southern Great Basin of the United States

Using Chemostratigraphy to Correlate and Calibrate Unconformities in Neoproterozoic Strata from the Southern Great Basin of the United States

Stratigraphic record of basin development within the San Andreas fault system: Late Cenozoic Fish Creek-Vallecito basin, southern California

Early Proterozoic magmatism in Yukon, Canada: constraints on the evolution of northwestern Laurentia

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