Site 504: Costa Rica Rift

Keir Becker, H. Sakai

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Citations (Scopus)

Abstract

The rocks recovered from Hole 504B during Leg 111 are aphyric or sparsely- to highly-phyric, fine- to medium-grained, olivine tholeiitic basalts. Most of the recovered basalt is slightly altered, and olivine replaced by ± chlorite, ± pyrite ± talc, ± mixed-layer clay minerals, ± magnetite, or by chlorite + actinolite. Although coring was difficult, the logging and experiments were quite successful. Before Leg 111 began coring, undisturbed borehole temperatures were continuously logged, and borehole waters were sampled. The highest measured temperature was 148.9°C at 1280 mbsf, suggesting an equilibrium temperature of about 165°C at the present total depth of the hole. -from Authors

Original languageEnglish (US)
Title of host publicationProc., initial reports (part A), ODP, Leg 111, Costa Rica Rift
EditorsK. Becker, H. Sakai
PublisherODP, Texas A & M University, College Station; UK distributors, IPOD Committee, NERC, Swindon
Pages35-251
Number of pages217
StatePublished - 1988

Fingerprint

chlorite
olivine
borehole
tholeiitic basalt
talc
mixed layer
clay mineral
magnetite
pyrite
basalt
temperature
rock
experiment
water

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Becker, K., & Sakai, H. (1988). Site 504: Costa Rica Rift. In K. Becker, & H. Sakai (Eds.), Proc., initial reports (part A), ODP, Leg 111, Costa Rica Rift (pp. 35-251). ODP, Texas A & M University, College Station; UK distributors, IPOD Committee, NERC, Swindon.

Site 504 : Costa Rica Rift. / Becker, Keir; Sakai, H.

Proc., initial reports (part A), ODP, Leg 111, Costa Rica Rift. ed. / K. Becker; H. Sakai. ODP, Texas A & M University, College Station; UK distributors, IPOD Committee, NERC, Swindon, 1988. p. 35-251.

Research output: Chapter in Book/Report/Conference proceedingChapter

Becker, K & Sakai, H 1988, Site 504: Costa Rica Rift. in K Becker & H Sakai (eds), Proc., initial reports (part A), ODP, Leg 111, Costa Rica Rift. ODP, Texas A & M University, College Station; UK distributors, IPOD Committee, NERC, Swindon, pp. 35-251.
Becker K, Sakai H. Site 504: Costa Rica Rift. In Becker K, Sakai H, editors, Proc., initial reports (part A), ODP, Leg 111, Costa Rica Rift. ODP, Texas A & M University, College Station; UK distributors, IPOD Committee, NERC, Swindon. 1988. p. 35-251
Becker, Keir ; Sakai, H. / Site 504 : Costa Rica Rift. Proc., initial reports (part A), ODP, Leg 111, Costa Rica Rift. editor / K. Becker ; H. Sakai. ODP, Texas A & M University, College Station; UK distributors, IPOD Committee, NERC, Swindon, 1988. pp. 35-251
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