1-20 OF 51 RESULTS FOR

beachrock

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: GSA Special Papers
Published: 06 March 2020
DOI: 10.1130/2019.2544(06)
EISBN: 9780813795447
... by a hardground that formed during subaerial exposure and that terminates Upper Maastrichtian limestone with planktic foraminiferal assemblages deposited at neritic depth during zone CF3 (ca. 66.500 Ma). Above the hardground, there are beachrocks with early Danian zone P1a(1) assemblages, which indicate...
FIGURES | View All (16)
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP456.4
EISBN: 9781786203373
... investigated in order to determine the mechanism for emplacement. At Lakki and Kommos, the boulders are tabular in shape and formed of local alluvial fan material and beachrock, respectively. The size of the slabs at Kommos indicates that these could have been deposited by either storm or tsunami waves...
FIGURES | View All (10)
Journal Article
Published: 01 May 2013
Journal of Sedimentary Research (2013) 83 (5): 395–405.
... and exotic), beachrock, and bioherm fragments (coral and worm reef). Terrestrial and anthropogenic clasts (from archeological sites, deflated dunes, flotsam, and shipwrecks) are also present. The unit forms as a lag deposit on top of a gently sloping (ca. 0.008), planar sandy deflation surface...
FIGURES | View All (13)
Journal Article
Published: 01 September 2012
South African Journal of Geology (2012) 115 (3): 291–308.
...H.C. CAWTHRA; R. UKEN; M.N. OVECHKINA Abstract The narrow, oceanic current-swept shelf of the Durban Bluff is characterised by Pleistocene aeolianites deposited unconformably onto a Cretaceous sequence. Subsequent beachrocks were deposited on and erosional features cut into the aeolianites...
FIGURES | View All (13)
Journal Article
Published: 01 September 2009
Journal of the Geological Society (2009) 166 (5): 873–878.
FIGURES | View All (7)
Journal Article
Published: 01 December 2007
South African Journal of Geology (2007) 110 (4): 647–653.
...Charl Bosman; Ron Uken; Maria N. Ovechkina Abstract Nannofossil assemblages extracted from rock samples collected at depths of between 33 and 15 metres on the Aliwal Shoal, a submerged aeolianite and beachrock complex on the southeast African continental shelf, indicate a late Middle Pleistocene...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 June 2006
AAPG Bulletin (2006) 90 (6): 971–973.
...Peter S. Mozley; Stephen J. Burns In light of the discrepancy between Friedman's interpretation and the existing literature, alternative hypotheses should be considered to explain the Gulf of Aqaba beachrock data. For example, the data can easily be explained by variable initial water...
Journal Article
Journal: AAPG Bulletin
Published: 01 June 2006
AAPG Bulletin (2006) 90 (6): 975–982.
...Gerald M. Friedman I shall answer their criticism. The studied beachrock is composed of (1) terrigenous debris derived from nearby bedrock, (2) carbonate particles of local origin, and (3) carbonate cement ( Friedman, 1988 ; Table 1 ). Table 1 X-Ray Diffraction Mineralogical...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 July 2005
AAPG Bulletin (2005) 89 (7): 849–852.
...Gerald M. Friedman Abstract Seaward-dipping prograding successions of beachrock of the shoreline of the rift valley of the Gulf of Aqaba, a steep-sided tectonic valley that forms the northern segment of the Red Sea, reflect progressive stages of cementation, which unravel a geologic history...
FIGURES
Journal Article
Published: 01 December 2004
South African Journal of Geology (2004) 107 (4): 619–632.
FIGURES | View All (13)
Journal Article
Journal: Geology
Published: 01 July 2000
Geology (2000) 28 (7): 591–594.
... yields a pattern consistent with east-west plate push via events that do not exceed m b = 5.2. Paleoseismic evidence from remote sensing, well records, earthquake-induced liquefaction, and radiocarbon dating of beachrock, coastal peats, and fault-filling sediment indicates the occurrence of larger...
FIGURES | View All (5)
Journal Article
Published: 01 September 1997
Journal of Sedimentary Research (1997) 67 (5): 805–814.
...Brian Jones; Michael R. Rosen; Robin W. Renaut Abstract Beachrocks on the north coast of Lake Taupo are composed of volcanic grains and diatoms that are bound together by isopachous, meniscus, or pore-filling amorphous silica cements. The littoral sediments were originally stabilized by epilithic...
Journal Article
Journal: GSA Bulletin
Published: 01 April 1995
GSA Bulletin (1995) 107 (4): 463–473.
... from the late Holocene Cabuya terrace, along the peninsula's trench-perpendicular southeastern coast, decrease systematically toward the arc, from 4.5 m/k.y. at Cabuya to 1.7 m/k.y. at Montezuma, 8 km to the northeast. An uplifted carbonate beachrock horizon (radiocarbon age: 4500–5200 yr B.P...
Journal Article
Journal: Geology
Published: 01 December 1993
Geology (1993) 21 (12): 1079–1082.
... the two transgressions. A highstand lagoonal deposit of coral-algal bafflestone is overlain by large seaward-dipping slabs of beach-rock. The beachrock, deposited during a mid-5e regression, is in turn overlain by a second highstand lagoonal deposit. This sequence was deposited in a broad, shallow, back...
Journal Article
Published: 01 July 1993
Journal of Sedimentary Research (1993) 63 (4): 574–588.
Journal Article
Journal: Geology
Published: 01 January 1990
Geology (1990) 18 (1): 62–66.
... in the late Holocene. Fossil in situ microatolls above present upper coral growth limits, the elevation of associated beachrock, and the morphological similarity of the conglomerate platform to the present reef-flat deposits indicate a late Holocene sea level above the present relative to the atoll. The atoll...
Journal Article
Published: 01 August 1989
Environmental and Engineering Geoscience (1989) xxvi (3): 325–332.
Journal Article
Journal: Geology
Published: 01 May 1987
Geology (1987) 15 (5): 414–418.
Journal Article
Published: 01 May 1987
Journal of Sedimentary Research (1987) 57 (3): 558–570.
...James H. Meyers Abstract Active precipitation of high-magnesian cryptocrystalline calcite cement (15.5 mole % MgCO 3 ) in the intertidal zone on the north shore of Maui, Hawaii, results in formation of an extensive beachrock exposure at Hookipa Park. Framework grains in the beachrock are coarse...
Journal Article
Published: 01 May 1986
Journal of Sedimentary Research (1986) 56 (3): 422–428.
... to beachrock formation. Continued erosion may break off blocks of beachrock and cliffs, which will be incorporated into the basal part of the sequence during a new phase of progradation. A freshwater-cemented sequence going from shallow subtidal to supratidal and eolian deposits does not, therefore...