The Yellowstone `hot spot` track results from migrating basin range
... large rhyolitic caldera volcanoes there. The existence of such volcanic chains, and in particular their perceived fixity relative to the Hawaiian chain, was the cornerstone of the original plume hypothesis (Morgan, 1971). This hypothesis attributes relative fixity of volcanic loci on different plate ...
... large rhyolitic caldera volcanoes there. The existence of such volcanic chains, and in particular their perceived fixity relative to the Hawaiian chain, was the cornerstone of the original plume hypothesis (Morgan, 1971). This hypothesis attributes relative fixity of volcanic loci on different plate ...
2.3. New Zealand – Primary Site 1. Background and Motivation
... The Puysegur Trench region (Figure 2) bears the hallmarks of nascent subduction and arc magmatism, and provides extraordinary opportunities to address the SCD science questions (some uniquely so). The Puysegur subduction zone initiated about 12 million years ago and was associated with profound ver ...
... The Puysegur Trench region (Figure 2) bears the hallmarks of nascent subduction and arc magmatism, and provides extraordinary opportunities to address the SCD science questions (some uniquely so). The Puysegur subduction zone initiated about 12 million years ago and was associated with profound ver ...
Imaging crust and upper mantle beneath Mount Fuji, Japan, by
... Mount Fuji, an arc volcano in central Japan, has at least two unique features. First, the eruption rate of Mount Fuji has been much larger than that of other island-arc volcanoes in Japan. Tsukui et al. [1986] estimated that the average eruption rate of Mount Fuji is about 5 km3/ka, while typical su ...
... Mount Fuji, an arc volcano in central Japan, has at least two unique features. First, the eruption rate of Mount Fuji has been much larger than that of other island-arc volcanoes in Japan. Tsukui et al. [1986] estimated that the average eruption rate of Mount Fuji is about 5 km3/ka, while typical su ...
55. The Western Rockall Plateau
... personal communication, 1976). In addition, detailed magnetic surveys of part of the Rockall Plateau made by the USNOO (Vogt and Avery, 1974), have been modified and extended (Figure 3) using data obtained by IOS and L-DGO (Roberts and Jones, 1975). In his discussion of the distribution of sediments ...
... personal communication, 1976). In addition, detailed magnetic surveys of part of the Rockall Plateau made by the USNOO (Vogt and Avery, 1974), have been modified and extended (Figure 3) using data obtained by IOS and L-DGO (Roberts and Jones, 1975). In his discussion of the distribution of sediments ...
Resolving the lithosphereasthenosphere boundary with seismic
... reduction at a depth less than 100 km, then 10–20 km variations in its depth translate into phase-velocity changes of up to 1 per cent. Variations in the thickness of the LAB from zero to a few tens of kilometres cause much smaller phase-velocity changes (∼0.1 per cent), although the signal of the L ...
... reduction at a depth less than 100 km, then 10–20 km variations in its depth translate into phase-velocity changes of up to 1 per cent. Variations in the thickness of the LAB from zero to a few tens of kilometres cause much smaller phase-velocity changes (∼0.1 per cent), although the signal of the L ...
Large Igneous Provinces, Delamination, and Fertile Mantle
... that 60–80% melting of eclogite is required to reproduce compositions of some LIP basalts (Natland, personal communication). FIG. 2 suggests that this is plausible and that lherzolite will start to melt under these conditions. The interaction of melts from eclogite and lherzolite is implied. The mod ...
... that 60–80% melting of eclogite is required to reproduce compositions of some LIP basalts (Natland, personal communication). FIG. 2 suggests that this is plausible and that lherzolite will start to melt under these conditions. The interaction of melts from eclogite and lherzolite is implied. The mod ...
Thermal and chemical structure at the bottom of the lower mantle
... Africa 26. P. Reutter et al., Atmos. Chem. Phys. 9, 7067 (2009). and institutions is gratefully acknowledged as detailed and the Pacific Ocean. Each region is about 27. M. Kulmala et al., J. Aerosol Sci. 35, 143 (2004). in the supporting online material. ...
... Africa 26. P. Reutter et al., Atmos. Chem. Phys. 9, 7067 (2009). and institutions is gratefully acknowledged as detailed and the Pacific Ocean. Each region is about 27. M. Kulmala et al., J. Aerosol Sci. 35, 143 (2004). in the supporting online material. ...
Faulting and hydration of the Juan de Fuca plate system
... Multichannel seismic observations provide the first direct images of crustal scale normal faults within the Juan de Fuca plate system and indicate that brittle deformation extends up to ~ 200 km seaward of the Cascadia trench. Within the sedimentary layering steeply dipping faults are identified by st ...
... Multichannel seismic observations provide the first direct images of crustal scale normal faults within the Juan de Fuca plate system and indicate that brittle deformation extends up to ~ 200 km seaward of the Cascadia trench. Within the sedimentary layering steeply dipping faults are identified by st ...
Seimic analysis of Carboniferous rift basin and Triassic growth
... This study analyzes 2D seismic sections of extensional growth-fault basins, covering two tectonic realms; (i) Carboniferous rifting in Central Spitsbergen, and (ii) shallow Triassic extensional basins of the SE Svalbard region. The study of the Carboniferous Billefjorden Trough in Sassenfjorden-Temp ...
... This study analyzes 2D seismic sections of extensional growth-fault basins, covering two tectonic realms; (i) Carboniferous rifting in Central Spitsbergen, and (ii) shallow Triassic extensional basins of the SE Svalbard region. The study of the Carboniferous Billefjorden Trough in Sassenfjorden-Temp ...
Attenuation Tomography Beneath the Rocky Mountain Front
... Karato [1993] shows that velocity-temperature scaling relationships are dependent on attenuation (Q-1), a fact that Nataf and Ricard briefly considered but did not fully exploit. Using Karato’s relations with a Q of 50, a 9% S-wave velocity contrast will predict a change in temperature of almost 400 ...
... Karato [1993] shows that velocity-temperature scaling relationships are dependent on attenuation (Q-1), a fact that Nataf and Ricard briefly considered but did not fully exploit. Using Karato’s relations with a Q of 50, a 9% S-wave velocity contrast will predict a change in temperature of almost 400 ...
