An intermediate-fast spreading rate of the Troodos type oceanic crust; a comparison to modern oceanic crusts

Author(s): Yang Jingsui; Hall, James M.
Author Affiliation(s): Primary:
Chinese Academy of Geological Sciences, Institute of Geology, Beijing, China
Other:
Dalhousie University, Canada
Volume Title: Continental Dynamics
Source: Continental Dynamics, 1(1), p.70-80. Publisher: Chinese Academy of Geological Sciences, Institute of Geology, Beijing, China. ISSN: 1006-7825
Note: In English. 59 refs.; illus., incl. sketch maps
Summary: The proportion of pillowed flows in an oceanic crust can be used to indicate the spreading rate of both ancient and present-day ocean basins. An average of 41% of pillowed flows in the extrusive rocks of the Troodos Mts, combined with other characteristics of the ophiolite, suggests that the Troodos oceanic crust was formed at an intermediate-fast spreading rate (4-7.5 cm/yr half rate), which is consistent with results obtained from the OSDP/ODP drillholes and the seafloor at spreading ridges. On the basis of this spreading rate, the cycle of mean periodicity for major magmatic and spreading events during the formation of the Troodos oceanic crust is estimated at 2 × 105 yr.
Year of Publication: 1996
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 18 Geophysics, Solid-Earth; Atlantic Ocean; Bermuda Rise; Costa Rica Rift; Crust; DSDP Site 395; DSDP Site 418; DSDP Site 504; Deep Sea Drilling Project; East Pacific; Galapagos Rift; IPOD; Lava; Leg 102; Leg 109; Leg 111; Leg 137; Leg 140; Leg 148; Leg 45; Leg 52; Leg 53; Leg 69; Leg 70; Leg 78B; Leg 83; Leg 92; North Atlantic; Ocean Drilling Program; Oceanic crust; Ophiolite complexes; Pacific Ocean; Pillow lava; Plate tectonics; Rates; Sea-floor spreading; Spreading centers; Troodos Ophiolite
Coordinates: N250205 N250207 W0680326 W0680327
N011335 N011338 W0834348 W0834357
N224521 N224521 W0460454 W0460454
Record ID: 1998032009
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom