Editorial for Special Issue “Chemical, Mineralogical and Isotopic Studies of Diagenesis of Carbonate and Clastic Sediments”

Ihsan S. Al-Aasm; Howri Mansurbeg

doi:10.3390/min10111035

Editorial for Special Issue “Chemical, Mineralogical and Isotopic Studies of Diagenesis of Carbonate and Clastic Sediments”

Minerals ◽

10.3390/min10111035 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1035

Author(s):

Ihsan S. Al-Aasm ◽

Howri Mansurbeg

Keyword(s):

Low Grade ◽

Special Issue ◽

Chemical Changes ◽

Grade Metamorphism ◽

Clastic Sediments ◽

Isotopic Studies

Diagenesis of carbonates and clastic sediments encompasses the biochemical, mechanical and chemical changes that occur in sediments after deposition and prior to low-grade metamorphism [...]

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Editorial for Minerals Special Issue “From Diagenesis to Low-Grade metamorphism”

Minerals ◽

10.3390/min10100879 ◽

2020 ◽

Vol 10 (10) ◽

pp. 879

Author(s):

Fernando Nieto ◽

Margarita Do Campo

Keyword(s):

Oceanic Crust ◽

Low Grade ◽

Special Issue ◽

Grade Metamorphism ◽

Temperature Conditions ◽

Large Domains

Rocks affected by pressure–temperature conditions in the transitional field between diagenesis and low-grade metamorphism make up large domains of the Earth’s upper continental and oceanic crust [...]

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Amphiboles and biotite in relation to the stages of metamorphism in granogabbro

Mineralogical Magazine ◽

10.1180/minmag.1974.039.308.05 ◽

1974 ◽

Vol 39 (308) ◽

pp. 857-866 ◽

Cited By ~ 4

Author(s):

W. Smulikowski

Keyword(s):

Thermal History ◽

Regional Metamorphism ◽

Greenschist Facies ◽

Amphibolite Facies ◽

Low Grade ◽

Chemical Changes ◽

Grade Metamorphism ◽

Facies Metamorphism

SummaryThe Bratteggdalen granogabbro, a relict mass in the Caledonian amphibolites of Vestspitsbergen, shows a series of amphibole development reflecting its thermal history. A brown Ti-rich hornblende occurs as a late magmatic mantling of pyroxene. Low-grade metamorphism (greenschist facies) was accompanied by the development of actinolite from pyroxene; subsequent amphibolite facies metamorphism saw the development of an alkali-rich, blue-green hornblende. The chemical changes in the amphiboles are a succinct illustration of those found in progressive regional metamorphism.

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DETRITAL MUSCOVITE FROM THE EDIACARAN-CAMBRIAN BOUNDARY ZONE IN ATLANTIC CANADA: AGE, PROVENANCE, AND EFFECTS OF LOW-GRADE METAMORPHISM ON 40AR/39AR SYSTEMATICS

10.1130/abs/2017ne-290567 ◽

2017 ◽

Cited By ~ 1

Author(s):

Sandra M. Barr ◽

◽

Willis E. Hames ◽

Chris E. White

Keyword(s):

Atlantic Canada ◽

Low Grade ◽

Boundary Zone ◽

Grade Metamorphism

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Low-grade metamorphism and accretion tectonics: Southern Uplands terrain, Scotland

Mineralogical Magazine ◽

10.1180/minmag.1985.049.352.04 ◽

1985 ◽

Vol 49 (352) ◽

pp. 335-344 ◽

Cited By ~ 49

Author(s):

A. E. S. Kemp ◽

G. H. J. Oliver ◽

J. R. Baldwin

Keyword(s):

Subduction Zones ◽

Structural Data ◽

Low Grade ◽

Structural Level ◽

Concomitant Increase ◽

Illite Crystallinity ◽

Grade Metamorphism ◽

Trench Slope ◽

Reflectance Data ◽

Trajectory Characteristic

AbstractPrevious studies of low-grade metamorphism in the Southern Uplands accretionary terrain indicated prehnite-pumpellyite facies/anchizone conditions developed throughout the area, except for local preservation of trench-slope sediments and an accreted seamount at zeolite facies/advanced diagenetic grade. New graptolite reflectance data are presented that show a general northward increase in temperature in the Southern Uplands. The results from two cross-strike traverses in the southern and central belts in contemporaneous sequences, using illite crystallinity, illite lateral spacing (bo) , and graptolite reflectance, indicate the development of systematic accretion-related low-grade metamorphism. Well-developed and constant anchizone conditions occur throughout the NE (Langholm) traverse, associated with common, F1 accretion-related folding and a regionally penetrative S1 cleavage. In the SW (Kirkcudbright) traverse, however, the youngest, last accreted packets are preserved at a transitional diagenetic stage and lack a penetrative S1 cleavage. Illite crystallinity, graptolite reflectance, and bo increase systematically northward through earlier accreted packets, reaching values of the NE traverse only at the northern end. The concomitant increase of bo with illite crystallinity suggests the relatively high P-low T trajectory characteristic of subduction zones. Integration of metamorphic and structural data relates increasing intensity of aceretion-related F1 folding, developmertt of S1 fabric, and onset of later fold phases to grade of metamorphism and structural level within the accretionary pile.

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