Results 51 to 60 of about 20,365 (298)

Evolution of the Southwest Australian Rifted Continental Margin During Breakup of East Gondwana: Results From International Ocean Discovery Program Expedition 369

Geochemistry, Geophysics, Geosystems, 2020
International Ocean Discovery Program Expedition 369 drilled four sites on the southwestern Australian continental margin, in the deep water Mentelle Basin (MB) and on the neighboring Naturaliste Plateau (NP).
D. L. Harry, M. L. G. Tejada, E. Y. Lee, E. Wolfgring, C. C. Wainman, H.‐J. Brumsack, B. Schnetger, J.‐I. Kimura, L. Riquier, I. Borissova, R. W. Hobbs, T. Jiang, Y‐X. Li, A. Maritati, M. Martinez, C. Richter, G. Tagliaro, L. T. White   +17 more
doaj   +1 more source

Sea Beam Survey of an Active Strike-Slip Fault: The San Clemente Fault in the California Continental Borderland [PDF]

, 1989
The San Clemente fault, located in the California Continental Borderland, is an active, northwest trending, right-lateral, wrench fault. Sea Beam data are used to map the major tectonic landforms associated with active submarine faulting in detail ...
de Moustier, Christian, Legg, Mark R, Luyendyk, Bruce P, Mammerickx, Jacqueline, Tyce, Robert C.   +4 more
core   +2 more sources

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

Upper Crustal Structure of Superfast‐Spread Oceanic Crust Exposed at the Pito Deep Rift: Implications for Seafloor Spreading

Geochemistry, Geophysics, Geosystems, 2023
A tectonic window into the upper 2,000 m of oceanic crust generated at the superfast spreading (∼142 mm/yr) southern East Pacific Rise exposes a continuous layered structure of basaltic lavas and sheeted dikes over gabbroic rocks.
J. A. Karson, L. A. Chutas, N. W. Hayman, R. N. Hey, A. J. Horst, S. D. Hurst, E. M. Klein, D. F. Naar, R. J. Varga   +8 more
doaj   +1 more source

Tectonic and magmatic controls on hydrothermal activity in the Woodlark Basin [PDF]

, 2012
The Woodlark Basin is one of the rare places on earth where the transition from continental breakup to seafloor spreading can be observed. The potential juxtaposition of continental rocks, a large magmatic heat source, crustal-scale faulting, and ...
American Public Health Association, Baker, Baker, Baker, Baker, Binns, Binns, Bogdanov, C. W. Devey, Cherkashov, deMartin, E. T. Baker, Edmonds, Escartín, Ferris, Fouquet, Galindo-Zaldívar, Goodliffe, Hannington, Hannington, Kington, Lalou, Lisitzin, Little, M. D. Hannington, Macdonald, Martínez, Massoth, Mosher, N. Augustin, S. Petersen, Scheirer, Searle, Smith, T. E. Laurila, Taylor, Taylor, Taylor, Taylor, Tregoning, Walker, Weissel   +41 more
core   +1 more source

The dependence of seafloor roughness on spreading rate

Geophysical Research Letters, 1991
Bathymetric profiles taken parallel to flowlines across the mid‐ocean ridges of the South Atlantic and South Pacific strongly suggest an approximate linear relationship (slope 30–50 m cm−1 yr) between the RMS amplitude roughness of small scale features and spreading rate. This relationship is best demonstrated for spreading half rates <35 mm/yr. The
Kimberlee A. Kane, Dennis E. Hayes
openaire   +2 more sources

Seafloor spreading, sea level, and ocean chemistry changes [PDF]

Eos, Transactions American Geophysical Union, 2005
High Cretaceous ocean crust production rates have been causally linked to high global sea level and global CO2 due to increased outgassing. However, recent studies have questioned the empirical basis for high Cretaceous global seafloor spreading rates, high Cretaceous sea level (230–320 m above present), and the relationship between geochemical fluxes ...
Miller, Kenneth G., Rowley, David B., Kominz, Michelle A., Kent, Dennis V.   +3 more
openaire   +3 more sources

Stratigraphy of diagenesis: Limestone–dolomite cycles in a mid‐ramp setting, Miocene Arcadia Formation, South Florida, USA

The Depositional Record, EarlyView.
The data and interpretations of this study are used to test the proposal by Goldhammer et al. that a ‘stratigraphy of early diagenesis’ is operational in carbonate depositional systems. What this means is that distinct mineralogical and geochemical changes to rock and sediment occur associated with external controls, such as the rise and fall of sea ...
Donald F. McNeill, Peter K. Swart
wiley   +1 more source

Seascape configuration determines spatial patterns of seabird‐vectored nutrient enrichment to coral reefs

Ecography, EarlyView.
Pelagic‐feeding seabirds deliver nutrient subsidies that enhance the productivity, biodiversity, and resilience of terrestrial and marine ecosystems, particularly in nutrient‐poor tropical environments. However, the biogeophysical variables governing the fluxes of these nutrients within and among interconnected ecosystems remain poorly understood.
Courtney E. Stuart, Simon J. Pittman, Kostantinos A. Stamoulis, Cassandra E. Benkwitt, Hannah E. Epstein, Nicholas A. J. Graham, Andrew C. Smith, Jack H. Lacey, Kalia S. I. Bistolas, Jayna L. DeVore, Simon Ducatez, Lisa M. Wedding   +11 more
wiley   +1 more source

Upper Mantle Anisotropic Shear Velocity Structure at the Equatorial Mid‐Atlantic Ridge Constrained by Rayleigh Wave Group Velocity Analysis From the PI‐LAB Experiment

Geochemistry, Geophysics, Geosystems, 2021
The evolution of ocean lithosphere and asthenosphere are fundamental to plate tectonics, yet high resolution imaging is rare. We present shear wave velocity and azimuthal anisotropy models for the upper mantle from Rayleigh wave group velocities from ...
Utpal Saikia, Catherine Rychert, Nicholas Harmon, J. M. Kendall   +3 more
doaj   +1 more source