Evidence for a "Cadomian" ophiolite and magmatic-arc complex in SW Bulgaria

Alexandre Kounov; Johannes Graf; Albrecht von Quadt; Daniel Bernoulli; Jean Pierre Burg; Diane Seward; Zivko Ivanov; Mark Fanning

doi:10.1016/j.precamres.2012.06.003

Evidence for a "Cadomian" ophiolite and magmatic-arc complex in SW Bulgaria

Alexandre Kounov^*, Johannes Graf, Albrecht von Quadt, Daniel Bernoulli, Jean Pierre Burg, Diane Seward, Zivko Ivanov, Mark Fanning

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

New geochronological and geochemical data from the magmatic rocks of the Kraishte area (SW Bulgaria) reveal the existence of Cadomian arc magmatism intruding an ophiolitic complex. Similar geochemical signatures and crystallization ages of the basic to acidic rocks of the Struma Unit and the Osogovo-Lisets Complex suggest that these rocks were derived from one calc-alkaline magma source. They were parts of a magmatic arc associated during Ediacaran-Early Cambrian (560-540. Ma) times with subduction of the Proterozoic Prototethys Ocean. The geochemical analysis of the coeval calc-alkaline granitic magmatism (577-551. Ma) in the Morava Nappe reveals a trend from a within-plate towards volcanic-arc affinity.

Original language	English
Pages (from-to)	275-295
Number of pages	21
Journal	Precambrian Research
Volume	212-213
DOIs	https://doi.org/10.1016/j.precamres.2012.06.003
Publication status	Published - Aug 2012

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10.1016/j.precamres.2012.06.003

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title = "Evidence for a {"}Cadomian{"} ophiolite and magmatic-arc complex in SW Bulgaria",

abstract = "New geochronological and geochemical data from the magmatic rocks of the Kraishte area (SW Bulgaria) reveal the existence of Cadomian arc magmatism intruding an ophiolitic complex. Similar geochemical signatures and crystallization ages of the basic to acidic rocks of the Struma Unit and the Osogovo-Lisets Complex suggest that these rocks were derived from one calc-alkaline magma source. They were parts of a magmatic arc associated during Ediacaran-Early Cambrian (560-540. Ma) times with subduction of the Proterozoic Prototethys Ocean. The geochemical analysis of the coeval calc-alkaline granitic magmatism (577-551. Ma) in the Morava Nappe reveals a trend from a within-plate towards volcanic-arc affinity.",

keywords = "Bulgaria, Cadomian orogen, Kraishte, Magmatic arc, Ophiolites, U/Pb zircon analysis",

author = "Alexandre Kounov and Johannes Graf and {von Quadt}, Albrecht and Daniel Bernoulli and Burg, {Jean Pierre} and Diane Seward and Zivko Ivanov and Mark Fanning",

year = "2012",

month = aug,

doi = "10.1016/j.precamres.2012.06.003",

language = "English",

volume = "212-213",

pages = "275--295",

journal = "Precambrian Research",

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TY - JOUR

T1 - Evidence for a "Cadomian" ophiolite and magmatic-arc complex in SW Bulgaria

AU - Kounov, Alexandre

AU - Graf, Johannes

AU - von Quadt, Albrecht

AU - Bernoulli, Daniel

AU - Burg, Jean Pierre

AU - Seward, Diane

AU - Ivanov, Zivko

AU - Fanning, Mark

PY - 2012/8

Y1 - 2012/8

N2 - New geochronological and geochemical data from the magmatic rocks of the Kraishte area (SW Bulgaria) reveal the existence of Cadomian arc magmatism intruding an ophiolitic complex. Similar geochemical signatures and crystallization ages of the basic to acidic rocks of the Struma Unit and the Osogovo-Lisets Complex suggest that these rocks were derived from one calc-alkaline magma source. They were parts of a magmatic arc associated during Ediacaran-Early Cambrian (560-540. Ma) times with subduction of the Proterozoic Prototethys Ocean. The geochemical analysis of the coeval calc-alkaline granitic magmatism (577-551. Ma) in the Morava Nappe reveals a trend from a within-plate towards volcanic-arc affinity.

AB - New geochronological and geochemical data from the magmatic rocks of the Kraishte area (SW Bulgaria) reveal the existence of Cadomian arc magmatism intruding an ophiolitic complex. Similar geochemical signatures and crystallization ages of the basic to acidic rocks of the Struma Unit and the Osogovo-Lisets Complex suggest that these rocks were derived from one calc-alkaline magma source. They were parts of a magmatic arc associated during Ediacaran-Early Cambrian (560-540. Ma) times with subduction of the Proterozoic Prototethys Ocean. The geochemical analysis of the coeval calc-alkaline granitic magmatism (577-551. Ma) in the Morava Nappe reveals a trend from a within-plate towards volcanic-arc affinity.

KW - Bulgaria

KW - Cadomian orogen

KW - Kraishte

KW - Magmatic arc

KW - Ophiolites

KW - U/Pb zircon analysis

UR - http://www.scopus.com/inward/record.url?scp=84863451253&partnerID=8YFLogxK

U2 - 10.1016/j.precamres.2012.06.003

DO - 10.1016/j.precamres.2012.06.003

M3 - Article

SN - 0301-9268

VL - 212-213

SP - 275

EP - 295

JO - Precambrian Research

JF - Precambrian Research

ER -

Evidence for a "Cadomian" ophiolite and magmatic-arc complex in SW Bulgaria

Abstract

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