paragenesis

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paragenesis

fertility of an interspecific hybrid with either of the parent forms but not with other interspecific hybrids produced by them.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
The paragenetic sequence of different diagenetic stages is shown in table 1.
The aim of the hereby presented research was to state the changes in hight and body mass, depending on the influence of selected paragenetic factors.
Larsen (1942b) made a detailed study of the paragenetic relationships in the evolution of variscite nodules in the Clay Canyon deposit, identifying six stages: (1) variscite formation, followed by fracturing and the introduction of thin black quartz veinlets; (2) banded minerals, primarily crandallite, millisite and wardite, replacing and enclosing variscite while opening up cavities through shrinkage (some variscite nodules were entirely replaced by crandallite); (3) formation of free-growing crystals of gordonite, englishite, montgomeryite and probably overite and kolbeckite in cavities; (4) a minor reversion to crandallite formation from solution as isolated oolites; (5) apatite-group minerals; and finally (6) the limonitic phase (limonite is not present inside any of the nodules).
The course deals in preparation of polished ore sections, principals of reflected light polarizing microscope, optical properties of ore minerals, common ore texture and their significance, and paragenetic studies.
(2005) described the paragenetic sequence of mineralization and characterized the thermal conditions of the formation of different authigenic minerals in the crater interior.
Step 1: facies analysis (including establishing the primary porosity and permeability distributions, and the "primary aquastratigraphy"--a term newly defined in this article); Step 2: petrographic analyses (paragenetic sequence, mapping amounts and spatial distribution of diagenetic phases); Step 3: geochemical analyses (isotopes, trace elements, fluid inclusions, etc.); Step 4: burial history and paleohydrology; Step 5: integration with extant data (especially petrophysical data), if available, and Step 6:modeling (not necessary, but desirable in at least some cases).
Samples were analyzed petrographically and by cathodoluminescence to establish a paragenetic sequence, and individual phases drilled for geochemical analysis.
Isotopic analysis supports the proposed paragenetic history.
Carrollite was deposited early in the paragenetic sequence of the varied ore minerals present in the bornite pods, and it exhibits an especially interesting variety of replacement textures with respect to the subsequently deposited chalcopyrite and bornite.
Examination of hand samples or thin sections also allows for determination of the paragenetic sequence of fracture-filling sediments and precipitates.