Algal and cryptalgal structures and platform environments of the late pre-Phanerozoic Noonday Dolomite, eastern California

Wright, Lauren; Williams, Eugene G.; Cloud, Préston

doi:10.1130/0016-7606(1978)89<321:aacsap>2.0.co;2

Cited by 34 publications

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“…The Noonday contains algal mat structures identified by Cloud (in Wright et al, 1978) as the distinctive form Dzhelindia, similar to D. minima from the late Riphean Chechinsk beds of eastern Siberia (Kolosov, 1970(Kolosov, , 1975, and (on other grounds) probably of approximately the same age. This is consistent with an upper age limit for both the Noonday and the Pahrump Group of latest pre-Phanerozoic.…”

Section: Geologic Age and Setting Of The Fossil-bearing Stratamentioning

confidence: 97%

New microbial fossils from ∼1.3 billion‐year‐old rocks of Eastern California

Pierce

Cloud

1979

Geomicrobiology Journal

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Section: Geologic Age and Setting Of The Fossil-bearing Stratamentioning

confidence: 97%

New microbial fossils from ∼1.3 billion‐year‐old rocks of Eastern California

Pierce

Cloud

1979

Geomicrobiology Journal

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“…During extension and uplift along normal faults, resulting basins were filled with sediments derived from successively older stratigraphic levels of the underlying Pahrump Group (Wright et al 1976(Wright et al , 1992Burchfiel et al 1992). Evidence for extension includes a preponderance of coarse-grained sediments including kilometre-scale olistoliths (Miller 1985), syndepositional normal faults in the Kingston Range (Mrofka 2010), the southern Nopah Range (Wright et al 1976(Wright et al , 1978 and the Panamint Range (Prave 1999) and tholeiitic (Hammond 1983) pillow lavas in the Panamint Range (Miller 1985). Vertical offsets on the faults are .400 m in the Kingston Range at Jupiter Hills ( Fig.…”

Section: Structural Frameworkmentioning

confidence: 99%

“…The Noonday Dolomite overlying the eastern-KPF is divided into a lower, cream-coloured, laminated, microbial, dolomite member and an upper, laminated, silty, dolomite member (Wright et al 1978). The laminations at the base several metres of the lower member are parallel and horizontal, transitioning upwards to arching laminations that define larger-scale microbial mounds with synoptic relief of up to 200 m .…”

Section: Noonday Dolomitementioning

confidence: 99%

“…From 1950 to the mid-1980s, relevant publications focused on the stratigraphy, sedimentology, palaeogeography and source regions for the different facies of the KPF (Wright 1952(Wright , 1968Wright & Troxel 1966;Troxel 1967Troxel , 1982bWright et al 1976Wright et al , 1978Wright et al , 1984. From the early 1980s onwards, publications primarily addressed the glacial and tectonic features in the eastern and western facies assemblages (Miller 1982(Miller , 1983(Miller , 1985(Miller , 1987Link et al 1993), providing interpretations for the role of glaciation and extension in the deposition of the KPF as well as using the succession to help interpret the evolution of the developing passive margin of the western Cordillera , 1991Fedo & Cooper 2001).…”

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confidence: 99%

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Chapter 40 The Kingston Peak Formation in the eastern Death Valley region

Mrofka

Kennedy

2011

Memoirs

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The late Neoproterozoic Kingston Peak Formation (Fm.) is a several-kilometre-thick sedimentary succession primarily influenced by syndepositional tectonism and located in the region around Death Valley, California ( Fig. 40.1). Its distribution is divisible into an eastern facies assemblage, the subject of this paper, and a western facies assemblage covered in a separate chapter. The diamictitebearing Kingston Peak Fm. is bounded by the underlying shallow platform carbonates of the Beck Spring Fm. and overlain by the Noonday Dolomite. There is an absence of direct palaeolatitude or radiometric age constraints and any correlation is based on broad similarities with other coarse-grained strata (diamictite) located in a northward trending belt along the Cordilleran miogeocline. The overlying Noonday Dolomite has been interpreted to be a late Cryogenian 'cap carbonate' and shares a set of unique facies associations and isotopic and lithological characteristics with other late Neoproterozoic post-glacial carbonate intervals in Namibia, Canada, Australia and Brazil. Research to date has focused on understanding local basin evolution, glacial sedimentology, correlation between the eastern and western facies assemblages and initiation and development of the North American Cordillera. The intimate association of tectonic and glacial facies with rapid local thickness and facies changes corresponding with syn-sedimentary faulting is the most distinctive stratigraphic characteristic of the Kingston Peak Fm. The complex local stratigraphy complicates correlation both within the Death Valley region as well as globally, and pending absolute age dates, does not fit easily with conventional Cryogenian Period glacial models identifying two or more discrete ice ages.

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“…Large-scale stromatolites, within which are spaced, micriteor cement-filled tubes or gutters that maintain a palaeovertical ('geoplumb') orientation irrespective of the inclination of laminations in the host stromatolite, were described from cap dolostones in California (Cloud et al 1974;Wright et al 1978), Namibia (Hegenberger 1987) and later in Alaska, Brazil, Canada and Mongolia (Fig. 2.3).…”

Section: Cap Carbonatesmentioning

confidence: 98%

Chapter 2 A history of Neoproterozoic glacial geology, 1871–1997

Hoffman

2011

Memoirs

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Neoproterozoic glacial records have been discovered on 23 palaeocontinents, their rate of discovery changing little since 1871. Yet, half of all the resulting publications appeared since 2000. The history of research before 1998 is described in five stages defined by publication spikes; subsequent work is not covered because historical perspective is lacking. In stage 1 (1871-1907), 'Cambrian' (now Neoproterozoic) glaciation was recognized successively in Scotland, Australia, India, Norway, Svalbard and China. Criteria for recognition included faceted and striated pebbles in matrix-supported conglomerates resting on ice-worn bedrock pavements. In stage 2 , Neoproterozoic glaciation was shown to have been widespread in Africa, Asia and the Americas. Major textbooks summarized these findings, but the rejection of continental drift (to account for late Palaeozoic glacial dynamics) put a chill on research. In stage 3 , the occurrence of glacial deposits within carbonate successions, as well as nascent palaeomagnetic observations, suggested that Neoproterozoic glaciers reached sea-level at low palaeolatitudes, but the belated recognition of sediment gravity flowage caused glacial interpretations to be prematurely abandoned in key areas. In stage 4 (1965In stage 4 ( -1981, the extent of Neoproterozoic glaciation was rethought in light of plate tectonics. Distinctive chemical sediments (iron + manganese formations and cap carbonates) were identified. In basic climate models, modest lowering of solar luminosity resulted in global glaciation due to ice-albedo feedback, and deglaciation due to greenhouse forcing resulted from silicate-weathering feedback in the carbon cycle. Neoproterozoic glacial geologists were blind to these ideas. In stage 5 (1982)(1983)(1984)(1985)(1986)(1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997), reliable palaeomagnetic data combined with glacial marine sedimentation models confirmed that Neoproterozoic ice sheets reached sea level close to the palaeoequator.

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Algal and cryptalgal structures and platform environments of the late pre-Phanerozoic Noonday Dolomite, eastern California

Cited by 34 publications

References 0 publications

New microbial fossils from ∼1.3 billion‐year‐old rocks of Eastern California

New microbial fossils from ∼1.3 billion‐year‐old rocks of Eastern California

Chapter 40 The Kingston Peak Formation in the eastern Death Valley region

Chapter 2 A history of Neoproterozoic glacial geology, 1871–1997

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