Overlapping spreading centers on the East Pacific Rise

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924 D. Submarine Geology and Geophysics Ot.R ~ 1983i30 ( I~} planet. Interiors, 32(2):107-113. Marconi Space and Defence Sys., Stanmore, Middlesex, UK. 83:6747 Saxena, Narendra, 1983. Applications of marine geodesy. Eos, 64(24):409-410. Results of a survey to identify requirements for marine geodetic applications are summarized. Ma- rine geodesy is an important element of many applied oceanographic sciences, including naviga- tion and tsunami and sea level research. A strong recommendation was made for an altimetric satellite having _+ 10 cm accuracy. An ocean monitoring system also was recommended. Dept. of Civ. Engrg., Univ. of Hawaii, Honolulu, Hawaii 96822, USA. (tiP) D240. Local or regional tectonics 83:6748 Basentsyan, S.A., L.I. Kogan, Yu.I. Svistunov, A.Ye. Shlezinger and A.L. Yanshin, 1983. Tectonics of the junction zone between the Lesser Antilles island arc and the Atlantic Ocean floor according to seismic data. Int. Geol. Rev., 25(2):225-236. (Russian original.) Multichannel seismic data are used to delineate acoustic basement and the sedimentary strata. The sedimentary cover is believed to be continuous from the ocean floor over the arc's island slope. Mantle processes involved in the transition are discussed. (bas) 83:6749 Huchon, Philippe, 1983. The Kannawa Thrust (Izu Collision Zone, central Japan): evolution of the stress regime at the Eurasian-Philippine Sea plate boundary. C. r. hebd. S~anc. A cad. Sci., Paris, (II)296(11):869-872. (In French, English ab- stract.) Dept. de Geotecton., Univ. P. et M. Curie, 4, place Jussieu, 75230 Paris Cedex 05, France. detachment and transport. These accretionary tcr- ranes originated within the complex Asian-Pacific convergent plate boundary. Dept. of Geol. Sci.. Cornell Univ., Ithaca, N.Y. 14853, USA (msg) 83:6751 Klimetz, M.P., 1983. Speculations on the Mesozoic plate tectonic evolution of eastern China. 7k~c- tonics, 2(2): 139-166. That the observed Mesozoic deformation, voLcan- ism, silicic plutonism and occasional ophiolite emplacement are outgrowths of (1) the consumption of Paleotethyan, Neotethyan, and Kula/Pacific oceanic crust, and (2) the complex accretion of island arcs (and continental blocks that bounded or lay within them) to Eurasia is clearly demonstrated. Subduction was initiated during the Late Permian: the earliest recognizable Mesozoic collision occurred during the Late Triassic; SE Eurasia completed its assembly during the Late Jurassic-Early Cretaceous, These findings, coupled with recent paleomagnetic investigations (McElhinny et al., 1981), dispute previous interpretations of a Late Paleozoic con- solidation of SE Asia as well as the existence of a true Pangea. Includes fold-out stratigraphic maps and 5 pages of references. Dept, of Geol. Sci., State Uniw of New York, Albany, N.Y. 12222, ~'SA 83:6752 Miller, Hubert, 1983. Correlation of orogenes be- tween South America and the Antarctic Penin- sula. Neues Jb. Geol. Paldont. Abh., 166(1):50-64. (In German, English abstract.) Geol. Palaonto[. Inst. der Univ., Corrensstr. 24, D-4400 Munster~ FRG. 83:6753 Schouten, H., K.D. Klitgord (comment) and K.C~ Macdonald (reply), 1983. Matters arising. Over- lapping spreading centers on the East Pacific Rise. Nature, Lond., 303(5917):549-550. 83:6750 Karig, D.E., 1983. Acoreted terranes in the northern part of the Philippine Archipelago. Tectonics, 2(2):211-236. From west to east across central Luzon, 6 reasonably well delineated terranes can be identified; strike-slip faulting appears to be the dominant process in their D250. Plate and global tectonics 83:6754 Sabadini, Roberto, D.A. Yuen and Enzo Boschi, 1983. Dynamic effects from mantle phase tran- sitions on true polar wander during ice ages.

Transcript of Overlapping spreading centers on the East Pacific Rise

Page 1: Overlapping spreading centers on the East Pacific Rise

924 D. Submarine Geology and Geophysics Ot.R ~ 1983i 30 ( I~}

planet. Interiors, 32(2):107-113. Marconi Space and Defence Sys., Stanmore, Middlesex, UK.

83:6747 Saxena, Narendra, 1983. Applications of marine

geodesy. Eos, 64(24):409-410.

Results of a survey to identify requirements for marine geodetic applications are summarized. Ma- rine geodesy is an important element of many applied oceanographic sciences, including naviga- tion and tsunami and sea level research. A strong recommendation was made for an altimetric satellite having _+ 10 cm accuracy. An ocean monitoring system also was recommended. Dept. of Civ. Engrg., Univ. of Hawaii, Honolulu, Hawaii 96822, USA. (tiP)

D240. Local or regional tectonics

83:6748 Basentsyan, S.A., L.I. Kogan, Yu.I. Svistunov, A.Ye.

Shlezinger and A.L. Yanshin, 1983. Tectonics of the junction zone between the Lesser Antilles island arc and the Atlantic Ocean floor according to seismic data. Int. Geol. Rev., 25(2):225-236. (Russian original.)

Multichannel seismic data are used to delineate acoustic basement and the sedimentary strata. The sedimentary cover is believed to be continuous from the ocean floor over the arc's island slope. Mantle processes involved in the transition are discussed. (bas)

83:6749 Huchon, Philippe, 1983. The Kannawa Thrust (Izu

Collision Zone, central Japan): evolution of the stress regime at the Eurasian-Philippine Sea plate boundary. C. r. hebd. S~anc. A cad. Sci., Paris, (II)296(11):869-872. (In French, English ab- stract.) Dept. de Geotecton., Univ. P. et M. Curie, 4, place Jussieu, 75230 Paris Cedex 05, France.

detachment and transport. These accretionary tcr- ranes originated within the complex Asian-Pacific convergent plate boundary. Dept. of Geol. Sci.. Cornell Univ., Ithaca, N.Y. 14853, USA (msg)

83:6751 Klimetz, M.P., 1983. Speculations on the Mesozoic

plate tectonic evolution of eastern China. 7k~c- tonics, 2(2): 139-166.

That the observed Mesozoic deformation, voLcan- ism, silicic plutonism and occasional ophiolite emplacement are outgrowths of (1) the consumption of Paleotethyan, Neotethyan, and Kula/Pacific oceanic crust, and (2) the complex accretion of island arcs (and continental blocks that bounded or lay within them) to Eurasia is clearly demonstrated. Subduction was initiated during the Late Permian: the earliest recognizable Mesozoic collision occurred during the Late Triassic; SE Eurasia completed its assembly during the Late Jurassic-Early Cretaceous, These findings, coupled with recent paleomagnetic investigations (McElhinny et al., 1981), dispute previous interpretations of a Late Paleozoic con- solidation of SE Asia as well as the existence of a true Pangea. Includes fold-out stratigraphic maps and 5 pages of references. Dept, of Geol. Sci., State Uniw of New York, Albany, N.Y. 12222, ~ 'SA

83:6752 Miller, Hubert, 1983. Correlation of orogenes be-

tween South America and the Antarctic Penin- sula. Neues Jb. Geol. Paldont. Abh., 166(1):50-64. (In German, English abstract.) Geol. Palaonto[. Inst. der Univ., Corrensstr. 24, D-4400 Munster~ FRG.

83:6753 Schouten, H., K.D. Klitgord (comment) and K.C~

Macdonald (reply), 1983. Matters arising. Over- lapping spreading centers on the East Pacific Rise. Nature, Lond., 303(5917):549-550.

83:6750 Karig, D.E., 1983. Acoreted terranes in the northern

part of the Philippine Archipelago. Tectonics, 2(2):211-236.

From west to east across central Luzon, 6 reasonably well delineated terranes can be identified; strike-slip faulting appears to be the dominant process in their

D250. Plate and global tectonics

83:6754 Sabadini, Roberto, D.A. Yuen and Enzo Boschi,

1983. Dynamic effects from mantle phase tran- sitions on true polar wander during ice ages.