Plagioclase stratigraphy; a record of magmatic conditions and events in a granite stock

Clicks: 2
ID: 293553
1968
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #3,032 of 8,486 articles by views in american journal of science

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 8,486 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Details of plagioclase zoning were correlated throughout a 3-sq mi quartz-monzonite stock on Mount Pilchuk, Wash. A typical zone sequence in all phenocrysts is: andesine cores with oscillatory zoning; core-rim boundaries marked by sharp drops of 8 to 15 percent An, and rims normally zoned from An ~28~ to An ~15~ . Discontinuities between rims and cores represent a period of core resorption and non-crystallization caused by pressure decrease during intrusion. Coarse oscillations within cores (3 to 7 percent An) record convection and turbulence in an inhomogeneous magma during the early stages of crystallization. Constant composition of the outermost core zones indicates homogenization of the magma prior to and during intrusion. Zones within the outermost core show low compositional correlation and indicate a high degree of crystal mixing.
Reference Key
openalex_W2052890473 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Robert A. Wiebe
Journal american journal of science
Year 1968
DOI
10.2475/ajs.266.8.690
URL
https://ajsonline.org/article/59261.pdf
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.