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seaward-dipping reflectors

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Journal Article
Journal: Geology
Published: 01 May 2017
Geology (2017) 45 (5): 439-442.
...D.A. Paton; J. Pindell; K. McDermott; P. Bellingham; B. Horn Abstract Seaward-dipping reflectors (SDRs) have long been recognized as a ubiquitous feature of volcanic passive margins, yet their evolution is much debated, and even the subject of the nature of the underlying crust is contentious...
FIGURES | View All (4)
Journal Article
Journal: Geosphere
Published: 01 June 2015
Geosphere (2015) 11 (3): 563-571.
... during continental breakup. This process contributes to the tilting of basaltic flows toward the magma injection axis, forming the typical wedge-shaped seaward-dipping reflector sequences on either side of the eventual rupture site as the new ocean basin forms. 22 05 2014 13 01 2015 16 03...
FIGURES | View All (8)
Journal Article
Journal: Geology
Published: 01 January 1995
Geology (1995) 23 (1): 9-12.
...Jinyong Oh; James A. Austin, Jr.; Joseph D. Phillips; Millard F. Coffin; Paul L. Stoffa Abstract Deep-penetration multichannel seismic reflection profiles off the southeastern United States reveal widespread seaward-dipping reflectors (SDRs). Similar features have been imaged and sampled on other...
Journal Article
Journal: Geology
Published: 01 July 1982
Geology (1982) 10 (7): 353-357.
...John C. Mutter; Manik Talwani; Paul L. Stoffa Abstract A remarkable layered acoustic stratification is observed in the upper oceanic crust adjacent to the Norwegian continental margin. It comprises a seaward-dipping complex of reflectors in the form of a wedge. We suggest that it is a layered...
Formation of transitional crust by (1) growth of <b>seaward</b>-<b>dipping</b> <b>reflectors</b>...
in > Geology
Published: 01 December 2014
Figure 5. Formation of transitional crust by (1) growth of seaward-dipping reflectors (SDRs) (basaltic eruptions, indicated by red arrow, sourced from dikes, shown in purple), which weld onto (2) mid-crust gabbro constructed by dilation (black arrows) within a ductile extension-accretion zone
Journal Article
Published: 01 December 2003
Journal of the Geological Society (2003) 160 (6): 985-990.
... with Mesozoic seaward-dipping reflector sequences along the North Atlantic, and northwestern Australian volcanic passive margins, and strongly imply the formation of a volcanic passive margin in eastern Gondwanaland at the close of the Neoproterozoic. Recognition of this event has implications for the position...
Map of Exmouth region. SDR—<b>seaward</b>-<b>dipping</b> <b>reflector</b> series, COT—continent-...
Published: 01 October 2015
Figure 1. Map of Exmouth region. SDR—seaward-dipping reflector series, COT—continent-ocean transition, BSB—Barrow subbasin, PS—Peedamullah Shelf, CRFZ—Cape Range fracture zone, WZFZ—Wallaby Zenith fracture zone. Vinck-1 (V1), Eendracht-1 (E1), Investigator-1 (I1), Sirius-1 (S1), Herdsman-1 (H1
Model for formation of <b>seaward</b>-<b>dipping</b> <b>reflector</b>–bearing transitional crust...
in > Geology
Published: 01 December 2014
Figure 4. Model for formation of seaward-dipping reflector–bearing transitional crust during plate separation, specifically magma-assisted extensional growth around a pluton-cored axial horst. 1—seaward-dipping reflectors (subaerial basalt lava flows); 2—mid-crust imbricate layer (sheared gabbro
Journal Article
Published: 01 June 1997
Journal of the Geological Society (1997) 154 (3): 531-536.
...A. J. BARTON; R. S. WHITE Abstract Continental break-up in the northern North Atlantic was accompanied by massive volcanism. This produced sequences of basalt flows erupted close to sea-level, which are imaged as seaward-dipping reflectors on seismic reflection profiles. They comprise the upper 4-5...
Journal Article
Published: 01 October 1999
Journal of the Geological Society (1999) 156 (5): 1051-1055.
... Greenland flexure by Nielsen & Brooks (1981) and Larsen et al. 1995, and they refer also to Fitton et al. 1995 who trace the geochemical signature of the continent-ocean transition in the seaward-dipping reflectors close to the J. A. C halmers , N. S kaarup & T. C. R. P ulvertaft , Geological...
Journal Article
Published: 01 June 1998
Journal of the Geological Society (1998) 155 (3): 463-473.
... and syn-magmatic throws new light on its origin. We propose that this flexure and, by extrapolation, part of the plume-related seaward-dipping reflectors elsewhere, may correspond to volcanic layers forming a roll-over anticline overlying a continentward-dipping detachment. 12 2 1997 6 10 1997...
Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP420.2
EISBN: 9781862391345
...). On the magnetic anomaly maps, important features and structures are visible. The mapped area of a seaward-dipping reflector sequence occurrence fits the margin-parallel positive magnetic anomaly, especially on the African margin. On the South American margin, the data now allow the interpretation of seafloor...
FIGURES | View All (10)
Published: 01 December 2005
DOI: 10.5724/gcs.05.25.1016
EISBN: 978-0-9836096-5-0
... ( CAMP ). Therefore, the importance of seaward-dipping reflectors ( SDRs ) in the Gulf of Mexico Basin suggests a subaerial origin for extruded “proto-oceanic” crust, thereby implying that revisions to some of the published models are necessary because of the style of breakup represented by seaward...
Journal Article
Published: 01 November 1995
Journal of the Geological Society (1995) 152 (6): 985-990.
...J. G. Fitton; A. D. Saunders; L. M. Larsen; M. S. Fram; A. Demant; C. Sinton; The Party Abstract ODP Leg 152 drilled a transect across the SE Greenland seaward-dipping reflector sequence. The earliest, and most landward, lava flows (Hole 917A, Lower and Middle Series) represent a pre-break-up...
Journal Article
Published: 01 April 2010
Journal of Sedimentary Research (2010) 80 (4): 303-319.
..., in conjunction with the description of a deep rotary core taken through the northern part of the island, to constrain the GPR interpretations. In the shore-normal profile, GPR reflectors indicate both seaward- and landward-dipping clinoforms, as well as concave-upward scour-and-fill features. Seaward-dipping...
FIGURES | View All (16)
Journal Article
Journal: Interpretation
Published: 24 September 2019
Interpretation (2019)
... zones of prominent, southward-dipping reflectors associated with 7–10 km thick, dense, and highly magnetic material. Previous workers have interpreted the zones as either coarse clastic redbeds of Mesozoic age that are tilted within half-grabens or seaward-dipping reflectors of magmatic origin. Both...
FIGURES | View All (5)
Published: 01 January 2014
DOI: 10.5724/gcs.14.33.0001
EISBN: 978-0-9836097-9-0
... to the subcontinental realm. The occurrence of seaward dipping reflectors (SDRs) (a) overlying the outer continental fault blocks (0 to perhaps 15 km thickness), and (b) beyond the continental crust, where they merge with the zone of magmatic under plate and reach depths very near the Moho (up to 30 km thick...