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King Lear Formation

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Journal Article

The Lower Cretaceous King Lear Formation, northwest Nevada: Implications for Mesozoic orogenesis in the western U.S. Cordillera

Aaron J. Martin, Sandra J. Wyld, James E. Wright, John H. Bradford
Journal: GSA Bulletin
Published: 01 March 2010
GSA Bulletin (2010) 122 (3-4): 537–562.
DOI: https://doi.org/10.1130/B26555.1
... Formation, exposed in the Jackson Mountains and the Krum Hills of northwest Nevada, provides a rare and important record of Early Cretaceous tectonism and paleogeography. Our work shows that the King Lear Formation everywhere overlies deformed and metamorphosed Triassic-Jurassic rocks across a major...
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Composite stratigraphy of the <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">Formation</span> in the Jackson Mountains ...

Composite stratigraphy of the King Lear Formation in the Jackson Mountains ...

Published: 01 March 2010
Figure 6. Composite stratigraphy of the King Lear Formation in the Jackson Mountains from this study and Quinn et al. (1997) .
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Measured stratigraphic sections C and D in the <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">Formation</span>, central...

Measured stratigraphic sections C and D in the King Lear Formation, central...

Published: 01 March 2010
Figure 7. Measured stratigraphic sections C and D in the King Lear Formation, central Jackson Mountains. Measured section lines are along the lines of cross-sections C-C′ and D-D′ in Figure 4 . Note the different scales. The width of the column at different stratigraphic levels is defined
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Syndepositional normal faults in the <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">Formation</span> in the northern pa...

Syndepositional normal faults in the King Lear Formation in the northern pa...

Published: 01 March 2010
Figure 15. Syndepositional normal faults in the King Lear Formation in the northern part of the basin in the Jackson Mountains. View is to the north. Faults dip to the west, synthetic with the Delong Peak normal fault. Hammer is 35 cm long. In the inset, dashed lines show faults and solid lines
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Outcrop of <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">formation</span>. Conglomerate resting on siltstone near base...

Outcrop of King Lear formation. Conglomerate resting on siltstone near base...

Published: 01 October 1958
Fig. 5. Outcrop of King Lear formation. Conglomerate resting on siltstone near base of formation. Clasts are about 75 per cent andesite and 25 per cent diorite.
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Outcrop of <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">formation</span>. Conglomerate and siltstone at top of lower ...

Outcrop of King Lear formation. Conglomerate and siltstone at top of lower ...

Published: 01 October 1958
Fig. 6. Outcrop of King Lear formation. Conglomerate and siltstone at top of lower conglomerate unit. Cobbles and boulders in coarse conglomerate at top of picture are volcanic rocks and diorite but about one-third of material in finer conglomerate below has been derived from sedimentary rocks.
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Specimen of <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">formation</span>. Conglomerate from top of lower conglomerat...

Specimen of King Lear formation. Conglomerate from top of lower conglomerat...

Published: 01 October 1958
Fig. 7. Specimen of King Lear formation. Conglomerate from top of lower conglomerate unit. Clasts include diorite, d; andesite, a; quartzite, qt; chert, c; hornfels, hf; silicified volcanic rocks, sv; and quartz, q.
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Specimen of <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">formation</span>. Conglomerate specimen from near base of lo...

Specimen of King Lear formation. Conglomerate specimen from near base of lo...

Published: 01 October 1958
Fig. 8. Specimen of King Lear formation. Conglomerate specimen from near base of lower conglomerate unit. Clasts are principally andesite but also include diorite, d; crystal tuff, ct; and fine-grained shaly sandstone, sh.
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Thrust on north side of Deer Creek Peak. <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> <span class="search-highlight">formation</span> (Kkl) overlies...

Thrust on north side of Deer Creek Peak. King Lear formation (Kkl) overlies...

Published: 01 October 1958
Fig. 10. Thrust on north side of Deer Creek Peak. King Lear formation (Kkl) overlies andesite (pK) and is overlain by Pansy Lee conglomerate (TKp). Andesitic flows, flow-breccias, and agglomerates (pK) are exposed on upper plate of thrust. Half mile from Deer Creek Peak to Kkl-pK contact.
Journal Article

Happy Creek igneous complex and tectonic evolution of the early Mesozoic arc in the Jackson Mountains, northwest Nevada

Michael J. Quinn, James E. Wright, Sandra J. Wyld
Journal: GSA Bulletin
Published: 01 April 1997
GSA Bulletin (1997) 109 (4): 461–482.
DOI: https://doi.org/10.1130/0016-7606(1997)109<0461:HCICAT>2.3.CO;2
... in a volcanic arc setting. The King Lear Formation is a younger sequence of generally coarse-grained terrigenous clastic rocks that have previously been interpreted by some workers to be gradational with the Happy Creek igneous complex. A U-Pb zircon age of 125 ± 1 Ma from an interlayered ash-flow tuff near...
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Journal Article

Mesozoic geology of the Jackson Mountains, northwestern Nevada

BRANCH J. RUSSELL
Journal: GSA Bulletin
Published: 01 March 1984
GSA Bulletin (1984) 95 (3): 313–323.
DOI: https://doi.org/10.1130/0016-7606(1984)95<313:MGOTJM>2.0.CO;2
... and volcanogenic sedimentary rocks of the Happy Creek complex, and the Lower Cretaceous sedimentary rocks of the King Lear Formation. The lower Mesozoic rocks of the Jackson Mountains Unit record a transition from sedimentation on a starved lower slope–basinal margin, locally interrupted by prograding deposition...
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Journal Article

Petroleum Potential of Great Basin: ABSTRACT

Norman H. Foster, Edward D. Dolly
Journal: AAPG Bulletin
Published: 01 March 1980
AAPG Bulletin (1980) 64 (3): 442.
DOI: https://doi.org/10.1306/2F9189F0-16CE-11D7-8645000102C1865D
... area (Carson Sink, Nevada). Oil source units include the various Cretaceous to Tertiary lake deposits (Sheep Pass Formation, Elko shale, Kinsey Canyon formation, Newark Canyon Formation, and King Lear Formation), Mississippian Chainman Shale, Devonian Pilot Shale, and Ordovician Vinnini shale...
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(A) The basal <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> unconformity in the Jackson Mountains in the northe...

(A) The basal King Lear unconformity in the Jackson Mountains in the northe...

Published: 01 March 2010
is 8.5 cm long. (B–C) Exposures of the King Lear Formation in the Jackson Mountains. The continuity of bedding, with no folds or other structural disruptions, indicates that the King Lear Formation never experienced contractile deformation. Both views are looking to the south. B shows the central part
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SUMMARY OF KEY LITHOLOGIC FEATURES OF PRE-CENOZOIC ROCKS IN THE JACKSON MOU...

SUMMARY OF KEY LITHOLOGIC FEATURES OF PRE-CENOZOIC ROCKS IN THE JACKSON MOU...

Published: 01 March 2010
TABLE 1. SUMMARY OF KEY LITHOLOGIC FEATURES OF PRE-CENOZOIC ROCKS IN THE JACKSON MOUNTAINS, EXCLUSIVE OF THE KING LEAR FORMATION
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Stacked seismic-reflection profile. Location is shown in Figure 4 . Arrows...

Stacked seismic-reflection profile. Location is shown in Figure 4 . Arrows...

Published: 01 March 2010
Figure 14. Stacked seismic-reflection profile. Location is shown in Figure 4 . Arrows show termination of reflectors in the King Lear Formation against the Delong Peak fault. The fault outcrops directly east of the right edge of the profile.
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(A) Geologic map of the northern part of the Krum Hills compiled from mappi...

(A) Geologic map of the northern part of the Krum Hills compiled from mappi...

Published: 01 March 2010
Figure 11. (A) Geologic map of the northern part of the Krum Hills compiled from mapping at a scale of 1:24,000. (B) Composite stratigraphic section through the King Lear Formation in the Krum Hills. The compositional histogram for a conglomerate shows that ∼80% of the gravel-size clasts were
Journal Article

Cretaceous and Tertiary Orogeny in Jackson Mountains, Humboldt County, Nevada

Ronald Willden
Journal: AAPG Bulletin
Published: 01 October 1958
AAPG Bulletin (1958) 42 (10): 2378–2398.
DOI: https://doi.org/10.1306/0BDA5BD6-16BD-11D7-8645000102C1865D
...Fig. 5. Outcrop of King Lear formation. Conglomerate resting on siltstone near base of formation. Clasts are about 75 per cent andesite and 25 per cent diorite. ...
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Schematic block diagrams showing our interpretation of the structural and p...

Schematic block diagrams showing our interpretation of the structural and p...

Published: 01 March 2010
in the Late Jurassic(?) Winnemucca deformation belt (including the Willow Creek thrust). Deformation is accompanied and followed by erosion of the orogenic belt. (B–D) Middle Early Cretaceous deposition of the King Lear Formation across the erosionally beveled terranes. Note that cessation of shortening
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(A) The basal <span class="search-highlight">King</span> <span class="search-highlight">Lear</span> unconformity in the Krum Hills (part of contact sho...

(A) The basal King Lear unconformity in the Krum Hills (part of contact sho...

Published: 01 March 2010
Figure 12. (A) The basal King Lear unconformity in the Krum Hills (part of contact shown with dashed line). Undeformed conglomerates of the Quartzite-Chert Member (above hand lens) unconformably overlie the Upper Triassic Raspberry Formation, which displays a steeply dipping cleavage (traced
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(A) Schematic reconstruction of elements of the Early Cretaceous (Barremian...

(A) Schematic reconstruction of elements of the Early Cretaceous (Barremian...

Published: 01 May 2011
and Schmitt, 1990 ). MSNI—Mojave-Snow Lake-Nevada-Idaho dextral transform fault (after Wyld and Wright, 2001 ); KLB—King Lear basin system (location and paleocurrent data after Martin et al., 2010 ); LFTB—Luning-Fencemaker fold-and-thrust belt, which was inactive following the middle Jurassic (after Wyld