Thomson, Stuart N.; Ring, Uwe; Brichau, Stephanie; Glodny, Johannes; Will, Thomas M. (2009) Timing and nature of formation of the Ios metamorphic core complex, southern Cyclades, Greece, in Extending a Continent - Architecture, Rheology and Heat Budget. Geological Society, London, Special Publications, 321 (1). 139-167 doi:10.1144/sp321.7
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Timing and nature of formation of the Ios metamorphic core complex, southern Cyclades, Greece | ||
| Journal | Geological Society, London, Special Publications | ||
| Authors | Thomson, Stuart N. | Author | |
| Ring, Uwe | Author | ||
| Brichau, Stephanie | Author | ||
| Glodny, Johannes | Author | ||
| Will, Thomas M. | Author | ||
| Year | 2009 (January) | Volume | 321 |
| Page(s) | 139-167 | Issue | 1 |
| Publisher | Geological Society of London | ||
| URL | |||
| DOI | doi:10.1144/sp321.7Search in ResearchGate | ||
| Generate Citation Formats | |||
| Classification | Not set | LoC | Not set |
| Mindat Ref. ID | 436331 | Long-form Identifier | mindat:1:5:436331:0 |
| GUID | 0 | ||
| Full Reference | Thomson, Stuart N.; Ring, Uwe; Brichau, Stephanie; Glodny, Johannes; Will, Thomas M. (2009) Timing and nature of formation of the Ios metamorphic core complex, southern Cyclades, Greece, in Extending a Continent - Architecture, Rheology and Heat Budget. Geological Society, London, Special Publications, 321 (1). 139-167 doi:10.1144/sp321.7 | ||
| Plain Text | Thomson, Stuart N.; Ring, Uwe; Brichau, Stephanie; Glodny, Johannes; Will, Thomas M. (2009) Timing and nature of formation of the Ios metamorphic core complex, southern Cyclades, Greece, in Extending a Continent - Architecture, Rheology and Heat Budget. Geological Society, London, Special Publications, 321 (1). 139-167 doi:10.1144/sp321.7 | ||
| In | Ring, U., Wernicke, B. - Eds. (2009) Extending a Continent - Architecture, Rheology and Heat Budget. Special Publication Vol. 321. Geological Society of London | ||
| Abstract/Notes | Abstract We apply low-temperature thermochronology, Rb/Sr geochronology, petrological data, and structural mapping to constrain the timing and kinematics of the Ios metamorphic core complex. Top-to-north extension in the lower plate Headland Shear Zone was active at 18–19 Ma under metamorphic conditions of 475–610 °C and 0.65–1.1 GPa. The South Cyclades Shear Zone/Ios Detachment Fault (SCSZ/IDF) system shows top-to-south extensional shear active at c. 19 Ma at 380–550 °C, with local top-to-north bands. Extensional shear above the SCSZ/IDF is dominantly top-to-south to top-to-SW. PT estimates from an eclogite boudin constrain Eocene high-pressure metamorphism to 430–560 °C and 1.21±0.42 GPa to 0.66±0.37 GPa. Similar low-temperature thermochronometric ages across Ios demonstrate that ductile extensional movement ceased by c. 15 Ma. Exhumation to shallow crustal levels took place between c. 15 and 9 Ma at cooling rates of up to 120 °C Ma −1 with a slow down to <20 °C Ma −1 between 12 and 9 Ma, most likely accommodated by extensional slip at rates of c. 3 km Ma −1 along the top-to-SW Coastal Fault System. We propose a model of bivergent extension for exhumation of the Ios core complex between 19 and 9 Ma, with Ios forming a secondary antithetic top-to-south to top-to-SW extensional fault system to a more dominant top-to-north Naxos/Paros detachment system. | ||
Locality Pages
| Locality | Citation Details |
|---|---|
| Ios Island, Thira, South Aegean, Greece |
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