Kemik Sandstone, Arctic National Wildlife Refuge, northeastern Alaska

Mull, Charles G.

doi:10.14509/1174

Cited by 9 publications

(18 citation statements)

References 12 publications

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“…Locally it remains mapped as a member of the Kongakut Formation others, 1987, Mull, 1987). It has been correlated with the basal part of the Mount Goodenough Formation in the Yukon (Mull, 1987) and with the Pebble shale unit is considered the upper part the Ellesmerian sequence of northern Alaska (Moore and others, 1994 (Brabb, 1969) is medium-gray, white-weathering, massive, resistant, ridge-forming quartzite and sandstone containing a few interbeds of dark-gray siltstone and argillite. Thickness varies from 30 to 300 m and it locally contains abundant Buchia sublaevis of Valanginian age.…”

Section: Lower Cretaceous To Devonianmentioning

confidence: 95%

“…Thickness is as much as 1,300 m (Brosgé and others, 1979;Sable and Mangus, 1984). Includes Mount Kelly Graywacke of Mull (1985), which is divided into upper and lower parts. The upper part consists of fine-to medium-grained, dark brownish-gray to greenish-gray sandstone that contains interbedded, poorly exposed, slightly micaceous silty shale; unit generally forms poorly exposed, low, rubble-covered ridges.…”

Section: Lower Cretaceous To Devonianmentioning

confidence: 99%

“…In the Ignek Valley region, the lower part of the Kongakut Formation was subsequently reassigned (Molenaar, 1983) to the Kingak Shale (unit KJks here), extending the age range of the Kingak Shale into the Early Cretaceous (Valanginian). On generalized map, included as part of unit Kok Kke Kemik Sandstone (Lower Cretaceous, Hauterivian)-Very fine-to fine-grained, light-to medium-gray quartzose sandstone exposed in the northern foothills of the Brooks Range and correlated with discontinuous sandstone bodies known in the subsurface of the North Slope (Mull, 1987). Unit is thought to represent a high-latitude barrier island complex (Mull, 1987), in part on the basis of paleoenvironmental interpretations of fossils in the unit (R.C.…”

Section: Lower Cretaceous To Devonianmentioning

confidence: 99%

“…of Alaska, Fairbanks, cited in Mull, 1987). Originally defined as part of the now abandoned Ignek Formation of Jurassic age, it was later placed in the Kongakut Formation (Detterman and others, 1975) and then raised to formation status by Mull (1987). Locally it remains mapped as a member of the Kongakut Formation others, 1987, Mull, 1987).…”

Section: Lower Cretaceous To Devonianmentioning

confidence: 99%

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Geologic map of Alaska

Wilson¹

2015

Scientific Investigations Map

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Section: Lower Cretaceous To Devonianmentioning

confidence: 95%

Section: Lower Cretaceous To Devonianmentioning

confidence: 99%

Section: Lower Cretaceous To Devonianmentioning

confidence: 99%

Section: Lower Cretaceous To Devonianmentioning

confidence: 99%

See 2 more Smart Citations

Geologic map of Alaska

Wilson¹

2015

Scientific Investigations Map

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“…Depositional environment is poorly constrained but inferred to be entirely marine, probably in a slope or basin floor setting. The name 'Juniper sandstone' is informally applied here for the first time; previous reconnaissance mapping referred to these rocks as Canning Formation (Bader and Bird, 1986) and 'Albian turbidites' (Mull, 1987). This interval is likely correlative in part with other enigmatic sections preserved on strike at a similar latitude, and noted on figure 1, including: Gilead sandstone (Reifenstuhl, 1991;Decker and others, 2008), Arctic Creek unit (Molenaar and others, 1987;Mull and Decker, 1993), and Bathtub Graywacke (Detterman and others, 1975;Camber and Mull, 1986).…”

Section: Tsll Lower Sagavanirktok Formation Lower Part (Lower Paleogmentioning

confidence: 99%

Geologic map of the Kavik River area, northeastern Brooks Range, Alaska

Wartes¹,

Wallace²,

Loveland³

et al. 2011

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Tectonic controls on the development of unconformities: The North Slope, Alaska

Coakley¹,

Watts²

1991

Tectonics

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The geology of northern Alaska is defined by two complementary, synchronous tectonic events. Opening of the Canada basin breached the south facing Ellesmerian passive margin in the Late Jurassic, cutting off northerly derived sediment and initiating thermal subsidence of the north facing Beaufort passive margin. Uplift of the Brooks Range on thrust faults loaded the lithosphere, creating the Colville trough, a foreland basin more than 10 km deep, and providing the bulk of the sediments that filled it. The northerly advance of the Brooks Range caused the two independent loads to flexurally interfere. The Beaufort passive margin is separated from the foreland by the Barrow Arch, which is, in part, the flexural bulge due to the interaction of these two loading events [Nunn et al., 1987]. A record of this interaction is preserved in the sediments north and south of the Barrow Arch.We have used this stratigraphy, coupled with simple basin modeling, to consider the flexural and stratigraphic effects of the evolving thrust wedge and basin filling. Using a simple sedimentation model and loading on an elastic lithosphere, we have produced two unconformity-bounded sequences 1Also at Paper number 90TC01982. 0278-7407/91/90TC-01282510.00 without sea level change. The unconformities are produced as a consequence of sedimentation and two increments in the thrust load that cause the flexural bulge to translate laterally, rise, and fall. The generation of unconformifies over a flexural bulge by mass redistribution on a purely elastic lithosphere calls into question the use of these unconformities in other yoked systems to document viscoelastic lithospheric rheologies. Even if the lithospheric strength decays significantly on geologic time scales, we may not observe this decay in stratigraphy if the basin filling time is a significant fraction of the relaxation time. The Beaufort passive margin and the thrust belt strike at an oblique angle to each other, causing the independent bulges to constmctively interfere in the west and destructively interfere in the east. The advance of the thrust-related bulge beyond the eastern Beaufort shelf has, by flattening the basal decollement, exerted significant control on the thrust wedge of the Brooks Range, allowing the thrust wedge tip to advance beyond the coastline. 102 Coakley and Watts: Tectonic Unconformities, North Slope, Alaska subsidence. Explaining these discontinuities is difficult and has led to the classical view that orogenies can be divided into episodes of activity divided by periods of quiescence [King, 1955]. Sedimentary fill of foreland basins can often be divided into a few major sequences that coarsen and shallow upward. The continuity of these units in space and time imply that the coupled thrust belt/foreland basin system evolved towards equilibrium, converging on, or perhaps achieving Covey's [ 1986] steady state geometry [-Flemings and Jordan, 1989](H. Sinclair et al., Simulation of foreland basin stratigraphy using a diffusion model of mountain uplift and erosion: ...

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Kemik Sandstone, Arctic National Wildlife Refuge, northeastern Alaska

Cited by 9 publications

References 12 publications

Geologic map of Alaska

Geologic map of Alaska

Geologic map of the Kavik River area, northeastern Brooks Range, Alaska

Tectonic controls on the development of unconformities: The North Slope, Alaska

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