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hemipelagite

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Journal Article
Journal: AAPG Bulletin
Published: 01 October 2013
AAPG Bulletin (2013) 97 (10): 1785–1803.
..., and a lower proportion of high-density minerals. Hemipelagites have disorganized and chaotic clay fabrics characterized by visible flocculates and contain a higher proportion of denser particles. There may also be a corresponding change in clay mineralogy, for example, smectite in pelagites versus kaolinite...
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<b>Hemipelagite</b> deposit of calcareous calcispheric dolosiltstone; arrow denote...
Published: 01 March 2018
Figure 7. Hemipelagite deposit of calcareous calcispheric dolosiltstone; arrow denotes base of inversely graded bed. Calcispheres appear as white sand-sized grains and are likely planktonic in origin. Core diameter is 9.0 cm.
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Comparison between geochemical sequences deduced from Zumaia <b>hemipelagite</b> m...
Published: 01 June 2014
Fig. 9 Comparison between geochemical sequences deduced from Zumaia hemipelagite manganese content and the regional sequential framework from Baceta et al. [2005] in Schmitz et al. [2011] .
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Polished lithological specimens of (a) laminated <b>hemipelagite</b> from the Nant...
Published: 01 November 2007
Figure 1. Polished lithological specimens of (a) laminated hemipelagite from the Nant-ysgollon Shales Formation (Bed C+4 m); (b, c) bioturbated mudstone from the Banwy Burrowed Member (Bed X+8.5 m); (a) and (b) were cut perpendicular to bedding, (c) parallel to bedding. Scale bars represent 10
Series: GCSSEPM
Published: 01 December 2013
DOI: 10.5724/gcs.03.23.0725
EISBN: 978-0-9836096-7-4
... prodeltaic hemipelagite; dysoxic basin hemipelagite; sapropelite; confined subbasin ponded hemipelagite; unconfined slope and rise hemipelagite; pelagite; and condensed and transitional deposits. Definitions based on this work can be used in the detailed assessment of deep-water depositional systems...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1967
AAPG Bulletin (1967) 51 (3): 476.
... can affect deposition and composition, there are four principal processes of aqueous sedimentation which produce characteristic deposits herein designated as tractionites, gravitites, turbidites, and hemipelagites. A tractionite is a bed of clean, winnowed sand or coarse clastics deposited by moving...
Journal Article
Published: 01 November 2002
Bulletin de la Société Géologique de France (2002) 173 (6): 523–532.
... within their matrix, or within associated microrhythmic hemipelagites. These ante-Upper Eocene breccias, which are posterior to the HT-LP « Pyrenean » metamorphism (Mid.-Cretaceous in age and characterized by dipyre-bearing marbles and hornfelses) and to the Upper to Uppermost Cretaceous foldings...
Journal Article
Published: 01 March 1986
Journal of Sedimentary Research (1986) 56 (2): 307–316.
...Catherine W. Gortner; David K. Larue Abstract The island of Barbados exposes the crest of the Barbados accretionary prism of the Lesser Antilles forearc. The sedimentology of Lower Eocene hemipelagite was studied in three fault-bounded packets near Bissex Hill. Three facies were identified based...
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Outcrops of distal turbidites–<b>hemipelagites</b> and sills from the Yerba Loca F...
Published: 27 March 2008
Figure 2. Outcrops of distal turbidites–hemipelagites and sills from the Yerba Loca Formation at Ancaucha creek. (a) El Salto section. Hammer is 33 cm long. (b) Puerta de Ancaucha section. Person at lower left corner for scale.
Journal Article
Published: 01 June 2014
Bulletin de la Société Géologique de France (2014) 185 (6): 413–435.
...Fig. 9 Comparison between geochemical sequences deduced from Zumaia hemipelagite manganese content and the regional sequential framework from Baceta et al. [2005] in Schmitz et al. [2011] . ...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 2009
AAPG Bulletin (2009) 93 (4): 535–561.
... volumes for late Pleistocene (∼470 ka) to Holocene fill within the Fuji basin consist of approximately 45% mass transport complexes (MTCs), 5% channelized sandy turbidites, and 50% hemipelagites and muddy turbidites. At least ten MTCs within the Fuji basin flowed radially toward its depocenter, either...
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Series: SEPM Special Publication
Published: 01 January 2009
DOI: 10.2110/sepmsp.093.323
EISBN: 9781565762978
... foraminifera/proximal hemipelagites; (6) deep-water calcareous infaunal suboxic–dysoxic-basin index foraminifera/confined (ponded) hemipelagic dysoxites and oxygen-minimum dysoxites; (7) deep-water calcareous infaunal oxic-dysoxic–interface index foraminifera/sapropelites; (8) deep-water calcareous epifaunal...
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Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.022.01.08
EISBN: 9781862393974
... to the last glacial maximum. The sedimentary sequence shows: (1) silty-muddy contourites deposited during the mid-Devensian (Marine Isotope Stage 3), (2) glacimarine hemipelagites and sandy turbidites deposited between 26 and 18 C14 ka BP, followed by a short phase of erosion and redeposition by bottom...
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Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.022.01.29
EISBN: 9781862393974
... turbidites and have sharp or gradational basal contacts with underlying turbidites or hemipelagites, and sharp upper contacts with overlying hemipelagites. The framework composition of sandy contourites, in contrast, is largely equivalent to that of the associated turbidites. Palaeocurrent directions...
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Journal Article
Published: 01 May 1997
Journal of Sedimentary Research (1997) 67 (3): 571–582.
... of the Plio-Pleistocene Kazusa forearc basin, now exposed on the Boso Peninsula, Japan. In general, bottom-current-influenced sandy deposits (sandy contourites) are better sorted than associated turbidites and have sharp or gradational basal contacts with underlying turbidites or hemipelagites, and sharp...
Journal Article
Published: 15 February 1995
Journal of Sedimentary Research (1995) 65 (1b): 44–60.
... and hemipelagite) are analogous to muddy spill-over turbidites with interbedded hemipelagites on modern natural levees that accompany deep channels. Among the fine-grained sediments, a proximal-to-distal facies succession (with respect to presumed lateral distance from channels) consists of (3) siltstone-slate, (4...
Journal Article
Published: 01 March 1979
Journal of Sedimentary Research (1979) 49 (1): 23–28.
...M. Sagri Abstract There is a marked compositional contrast between hemipelagite and turbidite material of some Upper Cretaceous turbidite units of the Flysch Zone of the East Alps and of Helminthoid Flysch (Western Alps and Apennines). The first is a carbonate-poor or carbonate-free deposit (0%-5...
Journal Article
Published: 24 September 2018
Canadian Journal of Earth Sciences (2019) 56 (1): 77–100.
... deposits interposed with overbank deposits. Conglomerate pebble-counts, sandstone point-counts, detrital zircon ages, and major element, trace element, rare earth element, and Sm–Nd isotopic geochemistry of sandstone, mudstone, and hemipelagite beds suggests that the deposits consist mainly of first-cycle...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 2014
AAPG Bulletin (2014) 98 (4): 793–824.
...-transport deposits (MTDs) from confining hemipelagites, quantify MTDs internal architecture, and assess their reservoir potential or seal competence—the contrast, directionality, energy (CDE) method. The CDE values extracted from 3-D seismic data can be tied to any ground-truthed property of strata...
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Series: Geological Society, London, Memoirs
Published: 01 January 2014
DOI: 10.1144/M42.2
EISBN: 9781862397026
... began with fine-grained turbidites deposited in a mid–outer shelf setting. These pass up first into hemipelagites, then into sedimentary rocks deposited on a storm-dominated shelf, and finally a very extensive shallow subaqueous delta platform formed in a passive margin setting. In this chapter...
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