DIPPING BASEMENT REFLECTORS ALONG VOLCANIC PASSIVE MARGINS - NEW INSIGHT USING DATA FROM THE KERGUELEN PLATEAU

被引：11

作者：

SCHLICH, R

ROTSTEIN, Y

SCHAMING, M

机构：

[1] Laboratoire de Géophysique Marine, CNRS URA 323, Strasbourg, 67084, 5, rue René Descartes

[2] Institute for Petroleum Research and Geophysics, Holon, 58120

来源：

TERRA NOVA | 1993年 / 5卷 / 02期

关键词：

D O I：

10.1111/j.1365-3121.1993.tb00241.x

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Multichannel seismic reflection data from the Southern Kerguelen Plateau show many dipping basement reflectors associated with volcanic flows. These reflectors are quite similar in their shape to seaward-dipping basement reflectors observed along volcanic passive margins. On the Kerguelen Plateau the sources are updip of the basement reflectors, in the presently extinct and eroded volcanoes. We suggest that the same source/reflector geometry may also apply to the seaward-dipping basement reflectors observed along passive margins. We interpret these reflectors to be the result of volcanism on the passive margin which flowed in all directions into the newly created ocean basin at an early spreading stage.

引用

页码：157 / 163

页数：7

共 38 条

[1]

Barron J., Larsen B., Et al., Proc. ODP, Init. Repts., 119, (1989)

[2]

Bradley L.M., Frey H., Constraints on the crustal nature and tectonic history of the Kerguelen Plateau from comparative magnetic modeling using MAGSAT data, Tectonophys., 145, pp. 243-251, (1988)

[3]

Coffin M.F., Davies H.L., Haxby W.F., Structure of the Kerguelen Plateau province from Seasat altimetry and seismic reflection data, Nature, 324, pp. 134-136, (1986)

[4]

Colwell J.B., Coffin M.F., Pigram C.J., Davies H.L., Stagg H.M.J., Hill P.J., Seismic stratigraphy and evolution of the Raggatt Basin, southern Kerguelen Plateau, Mar. Petrol. Geol., 5, pp. 75-81, (1988)

[5]

Eldholm O., Thiede J., Taylor E., Evolution of the Voring volcanic margin, Proc. ODP, Sci. Results, 104, pp. 1033-1065, (1989)

[6]

Hagevang T., Eldholm O., Aalstad I., Pre‐23 magnetic anomalies between Jan Mayen and Greenland‐Senja fracture zones in the norwegian sea, Mar. Geophys. Res., 5, pp. 345-363, (1983)

[7]

Hinz K., A hypothesis on terrestrial catastrophes: Wedges of very thick oceanward dipping layers beneath passive continental margins—their origin and paleoenvironment significance, Geol. Jb, Ser. E, 22, pp. 3-28, (1981)

[8]

Hinz K., Mutter J.C., Zehnder C.M., Symmetric conjugation of continent‐ocean boundary structures along the Norwegian and East Greenland Margins, Mar. Petrol. Geol., 4, pp. 166-187, (1987)

[9]

Houtz R.E., Haye D.E., Markl R.G., Kerguelen Plateau bathymetry, sediment distribution and crustal structure, Mar. Geol., 25, pp. 95-130, (1977)

[10]

Keen C.E., de Voogd B., The continent‐ocean boundary at the rifted margin off eastern Canada: new results from deep seismic reflection studies, Tectonics, 7, pp. 107-124, (1988)

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