Tectonics and magmatism of the Hess deep region of the Galapagos rift |
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| Authors: | G L Kashintsev A A Shreider |
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| Institution: | (1) School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada;(2) Department of Earth Sciences, Syracuse University, Syracuse, NY 13244, USA;(3) Nicholas School of the Environment, Duke University, Durham, NC, USA;(4) North Carolina Geological Survey, Raleigh, NC 27699, USA; |
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| Abstract: | The joint analysis of data on the anomalous maganetic field, seismicity, and structures of the Hess deep basalts have allowed
us to specify the elongation of zone of spreading and to correct the spatial distribution of the neovolcanic zone. The precise
petrogeochemical analysis of various types of basalts composing the uneven-aged oceanic crust of the basin showed that the
neovolcanic zone magmatics are related to the primitive type in contrast to rift boards of differential basalts. A model of
the Galapagos rift’s deep structure in the area of the western Hess deep has been suggested. |
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