Zobrazeno 1 - 10
of 254
pro vyhledávání: '"David A. Clague"'
Autor:
C. Geoffrey Wheat, Robert A. Zierenberg, Jennifer B. Paduan, David W. Caress, David A. Clague, William W. Chadwick Jr.
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 11, Pp n/a-n/a (2020)
Abstract In 2016, temperature recorders were recovered, temperatures were measured, and fluid samples were collected from Vent 1, a high temperature (338°C) hydrothermal discharge site on the southern Cleft Segment of the Juan de Fuca Ridge. Coupled
Externí odkaz:
https://doaj.org/article/478febe97f024aff98424599e2dd09b8
Autor:
David A. Clague, Julie F. Martin, Jennifer B. Paduan, David A. Butterfield, John W. Jamieson, Morgane Le Saout, David W. Caress, Hans Thomas, James F. Holden, Deborah S. Kelley
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 6, Pp n/a-n/a (2020)
Abstract The Endeavour Segment of the Juan de Fuca Ridge is well known for its abundance of hydrothermal vents and chimneys. One‐meter scale multibeam mapping data collected by an autonomous undersea vehicle revealed 572 chimneys along the central
Externí odkaz:
https://doaj.org/article/9410603897b6409094865a350b917b8a
Publikováno v:
Frontiers in Marine Science, Vol 7 (2020)
The northernmost segment of the Gorda mid-ocean ridge is the site of a small-volume eruption in 1996 and the persistent off-axis Sea Cliff hydrothermal vent field. To better understand the geologic setting and formation of these features, 1-m resolut
Externí odkaz:
https://doaj.org/article/d1b57c37e56648eab8aeb5db37dd62b0
Autor:
David A. Clague, Jennifer B. Paduan, David W. Caress, Craig L. Moyer, Brian T. Glazer, Dana R. Yoerger
Publikováno v:
Frontiers in Earth Science, Vol 7 (2019)
The early development and growth of oceanic volcanoes that eventually grow to become ocean islands are poorly known. In Hawai‘i, the submarine Lō‘ihi Seamount provides the opportunity to determine the structure and growth of such a nascent ocean
Externí odkaz:
https://doaj.org/article/f2f5134a283240ba88701d34ac07d15f
Publikováno v:
Geosciences, Vol 9, Iss 6, p 245 (2019)
The oceanic crust consists mostly of basalt, but more evolved compositions may be far more common than previously thought. To aid in distinguishing rhyolite from basaltic lava and help guide sampling and understand spatial distribution, we constructe
Externí odkaz:
https://doaj.org/article/d0c5887306e3435187ebf1cfbc1a3569
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 14, Iss 10, Pp 4306-4333 (2013)
A combined study of mapping, observational, age constraint, and geochemical data at the summit of Axial Seamount, Juan de Fuca Ridge, has revealed its recent petrological history. Multiple basalt types erupted at the summit in a time sequence. At lea
Externí odkaz:
https://doaj.org/article/2d99c1706ede421dac9248fa34193082
Autor:
David A. Clague, Brian M. Dreyer, Jennifer B. Paduan, Julie F. Martin, William W. Chadwick, David W. Caress, Ryan A. Portner, Thomas P. Guilderson, Mary L. McGann, Hans Thomas, David A. Butterfield, Robert W. Embley
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 14, Iss 10, Pp 4403-4443 (2013)
Multibeam (1 m resolution) and side scan data collected from an autonomous underwater vehicle, and lava samples, radiocarbon‐dated sediment cores, and observations of flow contacts collected by remotely operated vehicle were combined to reconstruct
Externí odkaz:
https://doaj.org/article/87857d64401741f38c012b80f401815a
Autor:
Deborah S. Kelley, Suzanne M. Carbotte, David W. Caress, David A. Clague, John R. Delaney, James B. Gill, Hunter Hadaway, James F. Holden, Emilie E.E. Hooft, Jonathan P. Kellogg, Marvin D. Lilley, Mark Stoermer, Doug Toomey, Robert Weekly, William S.D. Wilcock
Publikováno v:
Oceanography, Vol 25, Iss 1, Pp 44-61 (2012)
Endeavour Segment of the Juan de Fuca Ridge is one of three Integrated Study Sites for the Ridge 2000 Program. It is a remarkable, dynamic environment hosting five major hydrothermal fields, numerous smaller fields, and myriad diffuse-flow sites; mag
Externí odkaz:
https://doaj.org/article/613d27f3cbbc434ba47ea621399dcf2c
Autor:
Kenneth H. Rubin, S. Adam Soule, William W. Chadwick Jr., Daniel J. Fornari, David A. Clague, Robert W. Embley, Edward T. Baker, Michael R. Perfit, David W. Caress, Robert P. Dziak
Publikováno v:
Oceanography, Vol 25, Iss 1, Pp 142-157 (2012)
Volcanic eruptions are important events in Earth's cycle of magma generation and crustal construction. Over durations of hours to years, eruptions produce new deposits of lava and/or fragmentary ejecta, transfer heat and magmatic volatiles from Earth
Externí odkaz:
https://doaj.org/article/fd62fe9f2d6d41d8bca06da2e6f0d290
Autor:
Hubert Staudigel, David A. Clague
Publikováno v:
Oceanography, Vol 23, Iss 1, Pp 58-71 (2010)
The geological evolution of seamounts has distinct influence on their interactions with the ocean, their hydrology, geochemical fluxes, biology, resources, and geohazards. There are six geological evolutionary stages of seamounts: (1) small seamounts
Externí odkaz:
https://doaj.org/article/843cfe0822cd43369b50b13149cf874d