Stratigraphic and Lithologic Relationships: Lateral Outcrop Profiles and Architectural Elements of Middle Eocene Torrey Submarine Canyon,"La Jolla, California: ABSTRACT"

AAPG Bulletin ◽  
1989 ◽  
Vol 73 ◽  
Author(s):  
Jeffrey A. May, John E. Warme
2010 ◽  
Vol 268 (1-4) ◽  
pp. 115-128 ◽  
Author(s):  
Nicolas Le Dantec ◽  
Leah J. Hogarth ◽  
Neal W. Driscoll ◽  
Jeffrey M. Babcock ◽  
Walter A. Barnhardt ◽  
...  

2018 ◽  
Vol 36 (2) ◽  
pp. 836 ◽  
Author(s):  
G. Ananiadis ◽  
I. Vakalas ◽  
A. Zelilidis ◽  
K. Stoykova

A different basin evolution is suggested between the northern and southern parts of the Pindos basin, based on biostratigraphic dating results. Characteristic nannofossils showed that flysch sedimentation in the whole basin started in the Paleocene and generally finished during the Eocene, with the exception of the Konitsa and Milia areas where sedimentation lasted until Early Oligocene. Although, basin depth increased southwards, Kastaniotikos and Sperchios faults affected the geometry of Pindos basin, creating ridges and troughs within the basin. Due to this segmentation of the basin, the continuity of the sedimentation in the northern part of the study area until Oligocene is suggested. Calcareous nannofossils recovered from this northern part indicate a Paleocene NP5 to early Cligocene (NP20-21) age. On the other hand, in the southern part, sedimentation of flysch was lasted until middle Eocene. According this model, sedimentation in the southern part, stopped during the middle Eocene, was followed by subaerial exposure and the migration of clastic sedimentation to the western part of Pindos zones (Pindos foreland basin of Ionian zone). At this time, in the northern part, a small-restricted basin was continuously active as a piggyback basin from upper Eocene to lower Oligocene and shallow deposits (slope and submarine canyon deposits, delta fan deposits) accumulated.


2013 ◽  
Vol 335 ◽  
pp. 16-34 ◽  
Author(s):  
C.K. Paull ◽  
D.W. Caress ◽  
E. Lundsten ◽  
R. Gwiazda ◽  
K. Anderson ◽  
...  

1968 ◽  
Vol 6 (2) ◽  
pp. 145-178 ◽  
Author(s):  
Anthony I Rees ◽  
Ulrich Von Rad ◽  
Francis P Shepard

Author(s):  
Madeleine M. Hamann ◽  
Matthew H. Alford ◽  
Andrew J. Lucas ◽  
Amy F. Waterhouse ◽  
Gunnar Voet

AbstractThe La Jolla Canyon System (LJCS) is a small, steep, shelf-incising canyon offshore of San Diego, California. Observations conducted in the fall of 2016 capture the dynamics of internal tides and turbulence patterns. Semidiurnal (D2) energy flux was oriented up-canyon; 62±20% of the signal was contained in mode 1 at the offshore mooring. The observed mode-1 D2 tide was partly standing based on the ratio of group speed times energy (cgE) and energy flux (F). Enhanced dissipation occurred near the canyon head at mid-depths associated with elevated strain arising from the standing wave pattern. Modes 2-5 were progressive, and energy fluxes associated with these modes were oriented down-canyon, suggesting that incident mode-1 waves were back-reflected and scattered. Flux integrated over all modes across a given canyon cross-section was always onshore and generally decreased moving shoreward (240±15 kW to 5±0.3 kW), with a 50kW increase in flux occurring on a section inshore of the canyon’s major bend, possibly due to reflection of incident waves from the supercritical sidewalls of the bend. Flux convergence from canyon mouth to head was balanced by the volume integrated dissipation observed. By comparing energy budgets from a global compendium of canyons with sufficient observations (6 in total), a similar balance was found. One exception was Juan de Fuca canyon, where such a balance was not found, likely due to its non-tidal flows. These results suggest that internal tides incident at the mouth of a canyon system are dissipated therein rather than leaking over the sidewalls or siphoning energy to other wave frequencies.


Author(s):  
Ekin Tilic ◽  
Greg W. Rouse

We describe a long-unnamed Chaetopterus Cuvier, 1830 species from southern California, using a combination of DNA barcoding and detailed morphological investigation employing high-resolution X-ray microtomography (micro-CT). Chaetopterus dewysee sp. nov. is not only one of the most dominant annelids in the benthic communities of the shallow end of the La Jolla submarine canyon, but also a well-established model for studying bioluminescence and has a published transcriptome. The description and naming of this southern Californian Chaetopterus is a step towards the much-needed revision of the group’s taxonomy and towards resolving the confusion over the ʻcosmopolitanʼ Chaetopterus variopedatus species complex. Micro-CT data showing details of both internal and external anatomy has been made freely available as the first annelid cybertype.


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