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lysocline

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Journal Article
Journal: Geology
Published: 01 January 1978
Geology (1978) 6 (1): 11-15.
... numerous closely spaced reflectors, whereas such sediments in great water depths (> 5,000 m) typically show an acoustically transparent layer. The levels at which these transitions occur roughly correlate with the present lysocline and the calcite compensation depth, which correspond to water depths...
Image
Model of glacial water masses and the aragonite <b>lysocline</b> in the western At...
Published: 01 January 2017
Figure 7. Model of glacial water masses and the aragonite lysocline in the western Atlantic during the last glacial maximum (adapted from Henrich et al., 2003 ). ACD: Aragonite Compensation Depth.
Journal Article
Published: 01 February 1996
Journal of the Geological Society (1996) 153 (1): 175.
... Cretaceous chalks were deposited in extensive, relatively shallow, shelf seas. One of the most important factors determining the fate of calcareous microfossils is the existence of a lysocline and the calcite compensation depth. The lysocline is a depth below which calcareous microfossils undergo significant...
Journal Article
Published: 01 September 1983
Journal of Sedimentary Research (1983) 53 (3): 719-731.
... the Holocene, the lysocline is located between 4050 m and 4350 m; the CCD is not present even in the deepest sample (4980 m). The late glacial ( approximately 18,000 years B.P.) lysocline may have shoaled to about 2500 m, whereas during early glacial time ( approximately 72,000 B.P.) it deepened to about 3400...
Journal Article
Journal: PALAIOS
Published: 01 August 1998
PALAIOS (1998) 13 (4): 311-334.
... calcitic fossils that show grain corrosion at northern Midcontinent localities (Nebraska/Iowa) indicate deposition under oxic to slightly dysoxic conditions within the calcite lysocline but below the aragonite compensation depth for this particular sea. Southward (Kansas), sparser calcitic faunas indicate...
Journal Article
Journal: PALAIOS
Published: 01 August 1998
... calcitic fossils that show grain corrosion at northern Midcontinent localities (Nebraska/Iowa) indicate deposition under oxic to slightly dysoxic conditions within the calcite lysocline but below the aragonite compensation depth for this particular sea. Southward (Kansas), sparser calcitic faunas indicate...
Journal Article
Journal: Geology
Published: 01 July 1978
Geology (1978) 6 (7): 388-391.
... in deep-water sediments, just above the calcite compensation depth, primarily reflect glacial-interglacial differences in carbonate preservation, our results suggest that the pattern of glacial-interglacial sedimentation in shallower cores, near the lysocline, primarily reflects productivity changes...
Series: GSA Memoirs
Published: 01 January 1975
DOI: 10.1130/MEM143-p1
.... B.P., dissolution rates at depth began to increase again, but this increase was compensated for either by a large increase in the carbonate supply or by a depression of the lysocline. As a result, until about 26 m.y. B.P., a very broad and extensive equatorial carbonate zone with maximal accumulation...
Journal Article
Journal: Geology
Published: 01 January 1975
Geology (1975) 3 (1): 29-33.
... on a ridge. Coccolith ooze and rarer radio-larian limestone were deposited on basin floors which were generally below the lysocline. Planktonic foraminifera deposited above the lysocline on basin walls were sporadically swept down into the basins as turbidity currents and, because of this rapid deposition...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1970
GSA Bulletin (1970) 81 (10): 3157-3160.
...G. ROSS HEATH; CHARLES CULBERSON Abstract The hydrographic features that appear to control the distribution of calcite in deep-sea sediments are the level at which the water passes from super- to undersaturation, and the level at which the rate of dissolution increases abruptly (the lysocline...
Journal Article
Journal: PALAIOS
Published: 12 March 2018
PALAIOS (2018) 33 (3): 85-93.
... is undersaturated in silica, whereas pelagic carbonate remains (e.g., foraminifers, coccolithophores) experience higher dissolution below the lysocline (the depth where there is a sharp increase in dissolution rate) until they reach the carbonate compensation depth (CCD), where dissolution is complete. Therefore...
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Journal Article
Published: 01 January 2017
Journal of Foraminiferal Research (2017) 47 (1): 56-69.
...Figure 7. Model of glacial water masses and the aragonite lysocline in the western Atlantic during the last glacial maximum (adapted from Henrich et al., 2003 ). ACD: Aragonite Compensation Depth. ...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2015
GSA Bulletin (2015) 127 (9-10): 1331-1347.
... change in the terrestrial environment, and (3) final loss of all trace fossils. We interpret loss of carbonate producers as related to shoaling of the lysocline in higher latitudes, in relationship to building atmospheric CO 2 . The loss of siliceous sponges is coincident with the global LPE event...
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Series: SEPM Special Publication
Published: 01 January 2014
DOI: 10.2110/sepmsp.105.06
EISBN: 9781565763241
... for cool margins. In addition, slope sedimentation below a shallow lysocline during the cool interval led to extensive carbonate dissolution. As a result, Artinskian-Kungurian middle and lower slopes are dominated by spiculitic chert. The Pennsylvanian-Early Permian succession consists of four third-order...
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Journal Article
Published: 01 July 2012
Journal of Micropalaeontology (2012) 31 (2): 97-109.
... nannofossils and the calcareous dinoflagellates. The preservation of carbonate sediments with abundant planktic foraminifera on the sea floor indicates that, by the mid-Jurassic, the carbonate/aragonite compensation depths (and associated lysoclines) must have developed in the water column. The holotype...
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Series: SEPM Special Publication
Published: 01 January 2008
DOI: 10.2110/pec.08.89.0047
EISBN: 9781565762244
... Abstract Syndepositional aragonite dissolution at very shallow depths, above the lysocline, is a major process that affects carbonate deposition and skews the composition of carbonate sediments. Such dissolution is capable of altering sediment composition in many settings...
Journal Article
Journal: GSA Bulletin
Published: 01 July 2007
GSA Bulletin (2007) 119 (7-8): 785-795.
... (PETM), an input of a large mass of isotopically depleted carbon into the ocean and atmosphere could have lowered the deep-sea pH, triggering a rapid shoaling of the lysocline and contributing to greenhouse warming. The MPBE was short lived: according to the counting of limestonemarl couplets...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2424(05)
... in nannofloral calcification during the PETM is not obvious. In both events, variations in lysocline/CCD depth and enhanced dissolution and/or diagenesis strongly affected nannofossil assemblages in some locations, but the overall nannofloral changes reveal a primary paleoecological and paleoceanographic signal...
Journal Article
Journal: Geology
Published: 01 March 1997
Geology (1997) 25 (3): 259-262.
...-day global carbon cycle to test the plausibility of the hypothesis. We find that (1) the δ 13 C of the deep ocean, shallow ocean, and atmosphere decreases by −2.3‰ over 10 4 yr and returns to initial values in an exponential pattern over ∼2 × 10 5 yr; (2) the depth of the lysocline shoals by up to 400...
Journal Article
Published: 01 July 1993
Journal of Sedimentary Research (1993) 63 (4): 589-595.
... are precipitated ubiquitously over GBB but accumulate on the banktop only leeward of Andros Island. Much of the mud produced on the bank is exported to deeper waters: the thickness of mud-dominated Holocene sediments on the leeward slope can reach 90 m, and the aragonitic lysocline around the Bahamas is depressed...