Oxygen isotope microanalyses of diagenetic quartz: possible low temperature occlusion of pores

Details Oxygen isotope microanalyses of diagenetic quartz: possible low temperature occlusion of pores Oxygen isotope microanalyses of diagenetic quartz: possible low temperature occlusion of pores

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995gecoa..59.2537h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 59, Issue 12, pp.2537-2543

Other

1

Scientific paper

Secondary ion mass spectrometry (SIMS) was used to obtain 18 O measurements on ~20 m spots in authigenic and detrital quartz from Mississippian sandstones of the western Canadian sedimentary basin. Detrital quartz shows a large range in 18 O (from 5 to 25 ) which overlaps the analyses of authigenic cements (20-34 ). Combining these data with the burial history and precipitation sequence of minerals indicates that meteoric water may have precipitated quartz at temperatures between 15 and 35°C over a period of 180 MA (300-120Ma). This nearly isothermal precipitation may have occluded pores in samples from the central portion of the basin, but quartz precipitation continued up ~75°C at the basin margin. Conventional bulk analyses of these samples gave 18 O values of 13.4 for detrital quartz and 19.8 for authigenic quartz. Models based on bulk isotopic analyses can bias the interpretation of the timing of diagenetic quartz precipitation toward much higher temperatures. The SIMS measurements in diagenetic silicates can identify discrete episodes of precipitation allowing a more accurate interpretation for the timing of diagenetic events.

Affiliated with

Also associated with

No associations

Rating

Oxygen isotope microanalyses of diagenetic quartz: possible low temperature occlusion of pores does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Oxygen isotope microanalyses of diagenetic quartz: possible low temperature occlusion of pores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen isotope microanalyses of diagenetic quartz: possible low temperature occlusion of pores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1208156