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fulcrum

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Journal Article
Published: 01 June 2017
Journal of Sedimentary Research (2017) 87 (6): 594–608.
...SANDEEP SHARMA; JANOK P. BHATTACHARYA; BENJAMIN RICHARDS Abstract This paper matches sediment fluxes, estimated to have passed through an ancient river system, with mapped downstream sediment volumes in a deltaic sink, providing a test of the recently developed fulcrum approach to source-to-sink...
FIGURES | View All (11)
Journal Article
Published: 01 January 2017
Journal of Sedimentary Research (2017) 87 (1): 97–116.
...Wen Lin; Janok P. Bhattacharya Abstract: Trunk rivers transport the bulk of the sediment in a source-to-sink (S2S) system, and total mass passing through any cross section (i.e., fulcrum) of a trunk-river over geologic time should allow matching of source-area sediment delivery budgets...
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Journal Article
Published: 01 May 2014
Journal of Sedimentary Research (2014) 84 (5): 349–372.
... a method, the fulcrum test, for estimating mass flux from the source area to the basin sink by calculation of channel paleohydrologic variables extractable from these common stratigraphic data sources. We use the Cenomanian channels of the Bahariya Formation, Egypt, as an example application...
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Series: GSA Special Papers
Published: 01 January 1986
DOI: 10.1130/SPE210-p105
... fulcrum areas, in dynamic equilibrium, on the eastern flank of the basin. The fulcrum areas were elongate north-south, parallel to the strike of west-tilted paleoslopes: they were centers for swamp development and coal deposition. Optimal conditions prevailed just west of the fulcrum, where subsidence...
Journal Article
Journal: AAPG Bulletin
Published: 01 April 2013
AAPG Bulletin (2013) 97 (4): 553–576.
FIGURES | View All (17)
Image
The <b>fulcrum</b> workflow for mass balance (after  Holbrook and Wanas 2014 ).
Published: 01 June 2017
Figure 3.— The fulcrum workflow for mass balance (after Holbrook and Wanas 2014 ).
Image
Work flow for <b>fulcrum</b> analysis.
Published: 01 January 2017
Fig. 5.— Work flow for fulcrum analysis.
Image
A comparison of estimated sediment discharge using the <b>fulcrum</b> approach and...
Published: 01 January 2017
Fig. 19.— A comparison of estimated sediment discharge using the fulcrum approach and the BQART method. The lower-end values are identical, and the higher-end value of the sediment discharge estimated using the fulcrum approach is greater than that of the BQART method. The difference could
Image
Work flow for the <b>fulcrum</b> test of basin mass balance.
Published: 01 May 2014
Fig. 4.— Work flow for the fulcrum test of basin mass balance.
Image
—<b>Fulcrum</b> point (after Shaler). In  A ,  B , and  C  lines  ab  represent la...
Published: 01 October 1934
Fig. 14. —Fulcrum point (after Shaler). In A , B , and C lines ab represent land before the movement, a′b′ after the movement; ss , position of shore line; sl , sea-level; p , pivotal point. A . Fulcrum point coincides with position of shore line. B . Fulcrum point is on land. C
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2008
DOI: 10.2110/pec.08.89.0083
EISBN: 9781565762244
...–wall subsidence and up–dip footwall uplift. Down–dip of the fault–block fulcrum, depositional sequences are more likely to be bounded by flooding surfaces and display retrogradational to backstepping depositional sequences, while up–dip of the fault–block fulcrum, sequences may form as a result...
Journal Article
Published: 17 November 2015
Geological Magazine (2016) 153 (3): 544–547.
... proposed: (1) thermoregulation; (2) humpback storage; or (3) display. According to our alternative hypothesis, the submerged sail would have improved manoeuvrability and provided the hydrodynamic fulcrum for powerful neck and tail movements such as those made by sailfish or thresher sharks when stunning...
FIGURES
Journal Article
Published: 01 September 2000
Journal of Paleontology (2000) 74 (5): 879–889.
...HARRY B. WHITTINGTON Abstract The fulcrate thorax of Stygina has the articulating furrow and a long articulating halfring, no pleural furrow, and the facetted outer portion of the pleura has the doublure terminating outside the fulcrum. In the type species the glabella is inflated and the axial...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1999
AAPG Bulletin (1999) 83 (1): 1320–1336.
... the lake water. If the lake water level is below a hinge point (fulcrum) that experiences no net subsidence, the lake shoreline is translated toward the site of subsidence, and a deeper lake forms. This tectonostratigraphic model for rift-lake sedimentation is tested in a seismic and sequence stratigraphic...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 1996
GSA Bulletin (1996) 108 (11): 1393–1403.
... valve acted as a fulcrum to elevate the commissure into the water column for efficient suspension feeding. Conversely, the same symbionts provide equivocal results when used to infer the circulation pattern of spiriferacean mantle cavity currents. These analyses also exemplify the great limitations...
Series: GCSSEPM, GCSSEPM
Published: 01 December 1993
DOI: 10.5724/gcs.93.14.0109
EISBN: 978-0-9836097-4-2
... is correlated with two magmatic events: (1) possible mantle plume in upper Paleozoic affecting northern NL-SA Basins and (2) reactivation of basement faults in middle Jurassic and accelerated southern basin subsidence, with the State Line Fault System acting as a ruptured “fulcrum” between the basin portions...
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 1974
DOI: 10.2110/pec.74.22.0083
EISBN: 9781565761520
... of the Las Vegas-Wasatch hinge line became negative, and the hinge line was the fulcrum. The Cordilleran geosyncline was destroyed before the end of the Triassic, and throughout much of the Late Triassic, Jurassic, and Cretaceous some of its sediments were stripped away, to be recycled and deposited...
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1973
AAPG Bulletin (1973) 57 (4): 770.
.... Up to 4,000 ft of Early Triassic sediments accumulated; by Middle Triassic time, a major reversal occurred: what had been a major negative mobile belt since late Precambrian time was now uplifted, although the region east of the hinge line became negative, and the hinge line was a fulcrum...
Image
Cartoon to illustrate the response of basinward tilting of a basin margin. ...
Published: 12 March 2021
Fig. 14.— Cartoon to illustrate the response of basinward tilting of a basin margin. Numbers are time steps from oldest (1) to youngest (3). A) The fulcrum point about which the basin margin rotates is fixed with erosion on the landward side, and deposition on the basinward side. B
Image
—Schematic representation of how the position of the lake shoreline relativ...
Published: 01 January 1999
Figure 8 —Schematic representation of how the position of the lake shoreline relative to the fulcrum governs whether a regression (AA′) or a transgression (BB′) will occur after faulting. The fulcrum is defined as the point of no net subsidence. Vertical arrows and letters A, A′, B, and B′ denote