Trace elements in igneous rocks, Northwestern and Central Arizona

Other

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4

Scientific paper

A study of the nature of trace element distribution within and between igneous plutonic rocks of like and unlike rock type, and of possible regional relationships was made in selected areas of Arizona. Two hundred and twenty-three rock samples were collected along three roughly linear traverses from seven major intrusive bodies, several smaller plutons and dikes, and from one dominantly migmatitic complex. The ferromagnesian phases (chiefly biotite) were separated from each sample and analysed spectrochemically for Pb, Sn, Ga, Ni, Co, Cr, Cu, Zn, Mo, V and Ag, and by X-ray fluorescence for Ti, Fe, Mn, Ca, K, Cu and Zn. The analytical results, coupled with petrographic and field data, indicate: 1. (1) the minorelement content of the ferromagnesian phases within a given pluton is relatively uniform, and no systematic trends are apparent; 2. (2) a significant difference exists between plutons with respect to the minor-element content of the ferromagnesian phases; 3. (3) the differences in content of certain minor elements may be as great between plutons of like rock type as between different rock types in the range diorite to granite; 4. (4) variations in the content of other minor elements more sensitive to rock type (Zn, Ga, V, Pb) are superimposed on variations between plutons; 5. (5) the Fe / Ti and Fe / Mn ratios in the bulk rock appear to be unaffected by differences in rook type; 6. (6) virtually all the Cu and Zn in the bulk rock are accounted for in the ferromagnesian. oxide, and sulphide phases; 7. (7) areas of known copper mineralization are reflected in anomalously high copper contents of samples from the associated plutonic bodies.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Trace elements in igneous rocks, Northwestern and Central Arizona 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 Trace elements in igneous rocks, Northwestern and Central Arizona, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trace elements in igneous rocks, Northwestern and Central Arizona will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1500555

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.