paragenetic


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paragenetic

[‚par·ə·jə′ned·ik]
(genetics)
Pertaining to chromosome changes that alter gene expression but not makeup.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Paragenetic sequence of diagenetic processes of the Mughal Kot Formation carbonates.
Works on the role of non-genetic and paragenetic factors are also interesting.
A paragenetic sequence lists diagenetic processes in the chronological order that they affected the rocks under investigation.
Claudia Gasparrini, President of Minmet Scientific Limited in Toronto, Canada and Tucson, Arizona, gave a talk entitled "The Applied Significance of the Paragenetic Relations in Gold and Silver Ores".
The relative timing of diagenetic minerals of sandstones of the Chang 7 member in the study area was inferred from the textural relationship as observed from thin section, SEM and a paragenetic sequence is present in Figure 14
However, we need to consider the following facts in the Zhaxikang deposit: (1) the second pulse of mineralization has brought some Fe to form the stage 3 pyrite with heavier [delta][sup.56]Fe values (0.23 [per thousand]~0.43 [per thousand]) [26]; thus the stage 3 pyrite does not fit the fractionation models; (2) as most of the sphalerite and pyrite are paragenetic during the first pulse of mineralization (Figures 4(g), 4(i), 4(k), 5(a)-5(c) and 6(c)), especially in the earliest lamina (Figures 4(a)-4(c), 5(c), 6(f) and 6(m)), the sphalerite and pyrite should overlap on F ranges; (3) in theory, the Mn-Fe carbonates would have the same F range for Fe-Zn isotopes.
Oil yield, calorific value and total sulfur determinations as well as proximate analysis were performed in the Key Laboratory for Oil Shale and Paragenetic Energy Minerals of Jilin Province, China.
This research allowed us to interpret the paragenetic sequence of dolomite cementation and associated processes in Devonian siliciclastic rocks in the northern part of the Baltic basin from early to late stages of diagenesis.
Field observations and examinations of numerous specimens can be used to determine the paragenetic sequence at Site I in the main mineralized zone (see Fig.
Paragenetic relationships suggest that the f[O.sub.2] of the paleofluids was above the hematite-magnetite equilibrium.