The Carboniferous Period

Davydov, Vladimir I.; Wardlaw, Bruce R.; Gradstein, Felix M.

doi:10.1017/cbo9780511536045.016

Cited by 81 publications

(125 citation statements)

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“…Thus, longterm eustatic sea level rise combined with active subsidence may have entailed the kind of rapid transgression that drowned the Mowanbini Archipelago and led to its subsequent burial and preservation with no evidence of platform erosion at higher elevations. If not fully buried at the close of the Devonian Period, the subsequent rise in sea level during Tournaisian time at the start of the Carboniferous Period (Davydov et al 2004) completed or added to its burial.…”

Section: Comparisons With Other Former Archipelagosmentioning

confidence: 99%

Outer Rocky Shores of the Mowanbini Archipelago, Devonian Reef Complex, Canning Basin, Western Australia

Johnson¹,

Webb²

2007

The Journal of Geology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. A B S T R A C TThe Oscar Range in Western Australia's Canning Basin features inliers of folded Paleoproterozoic quartzite, quartzitic conglomerate, and phyllite that formed islands during the Late Devonian. Undisturbed strata of the Pillara Limestone (Upper Devonian, Frasnian Stage) surround individual paleoislands that rise above the former seabed with a maximum topographic relief of 90 m. On average, the Mowanbini Archipelago (aboriginal name for the Oscar Range) lies 15 km off the granitic and metamorphic mainland represented by the Kimberley Block to the north. Devonian facies on outer rocky shores were studied at three localities near the southeast end of the Oscar Range. At the west end of the study area, a Devonian reef margin sits unconformably on Paleoproterozoic phyllite, but to the east, the reef is separated from rocky shores by a wide lagoon. Massive clast-supported conglomerate and sandstone beds interfinger with backreef carbonates where the reef is closest to land. Across the lagoon 2.5 km eastward, differential erosion between steeply dipping quartzite layers interbedded with softer phyllite resulted in low sea stacks, or skerries. Tabular quartzite cobbles and quartz sand were shed by the skerries as a unidirectional apron of "breccia" under shoal water conditions. Nearby offshore stromatoporoid thickets reflect growth orientation aligned with paleocurrents compatible with the breccia apron. On a smaller island 2.5 km farther east, lateral transport of debris from a quartzite shore to a contiguous phyllite sector of the coast conforms to the same pattern of water circulation. Overall, the physical geography of outer rocky shores in relation to the lagoon and barrier reef suggests that waves crashed over the reef to energize a longshore current that moved west to east at one end of the Oscar Range. A rapid rise in sea level probably promoted the burial and preservation of the Mowanbini Archipelago, characteristics shared with other examples of quartzite paleoislands that date from Cambrian to Cretaceous times.

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Section: Comparisons With Other Former Archipelagosmentioning

confidence: 99%

Outer Rocky Shores of the Mowanbini Archipelago, Devonian Reef Complex, Canning Basin, Western Australia

Johnson¹,

Webb²

2007

The Journal of Geology

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“…Based on the timescale of Richards (2013) Menning et al, 2000Menning et al, , 2006Davydov et al, 2012;Richards, 2013). For this reason, estimation of Visean to Pendleian substage boundaries has varied greatly over the years, with the Holkerian-Asbian, Asbian-Brigantian and Brigantian-Pendleian boundaries increasing in age by respectively ~6, ~4.5 and ~2 My between Menning et al (2000) and Richards (2013).…”

Section: Biostratigraphy Versus Geochronologymentioning

confidence: 99%

Tectonostratigraphic and petrogenetic setting of late Mississippian volcanism in eastern Canada

et al. 2018

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“…Only spore and pollen assemblages can be used to correlate and compare sections. The occurrence of monosaccate pollen indicates an age no older than Namurian (Mississippian) and, based upon comparison with the Australian sequences and applying the Davydov et al (2004) assessment, an age no older than Moscovian is inferred for the 2159A zone. Stephenson (2009) described younger Gondwanan floras from Namibia that occur in a succession containing ash layers that have been radiometrically dated.…”

Section: Palynological Correlation and Datingmentioning

confidence: 99%

Al Khlata glacial deposits in the Oman Mountains and their implications

Heward¹,

Penney²

2014

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A thick succession of Al Khlata glacio-lacustrine deposits, including diamictites, crops out in the Wadi Daiqa inlier and there are other possible Al Khlata outcrops in Wadi Amdeh and Wadi al Arabiyin. These outcrops in the Oman Mountains are 100 km north of where the Al Khlata had been thought to pinch out by non-deposition or erosion. Fossil spores and pollen from Wadi Daiqa are highly carbonized having been subject to greenschist facies metamorphism, but are still clearly identifiable as taxa from the Late Carboniferous 2159A zone of the oil-producing areas of interior Oman. This northernmost Al Khlata is sand rich and interpreted to be glacio-lacustrine. Previously the sand-dominated Al Khlata successions north of the Central Oman High have been considered to be glacio-fluvial outwash largely based on their context. The Al Khlata deposits in Wadi Daiqa and the underlying several-kilometre-thick Amdeh succession are preserved in Saih Hatat, probably in a continuation of the Ghaba Salt Basin that itself overlies an accreted terrane from the Pan African orogeny.

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The Carboniferous Period

Cited by 81 publications

References 0 publications

Outer Rocky Shores of the Mowanbini Archipelago, Devonian Reef Complex, Canning Basin, Western Australia

Outer Rocky Shores of the Mowanbini Archipelago, Devonian Reef Complex, Canning Basin, Western Australia

Tectonostratigraphic and petrogenetic setting of late Mississippian volcanism in eastern Canada

Al Khlata glacial deposits in the Oman Mountains and their implications

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