Thomas N. Lamont

Late Ordovician regional high-pressure metamorphism in Scotland, UK: Caledonian metamorphic climax predated the closure of the Iapetus Ocean

Thomas N. Lamont, William H. McCarthy, Rob A. Strachan, Nick M.W. Roberts et autres

Abstract We document newly recognized Late Ordovician high-pressure (HP) metamorphism in the Scottish Caledonides. Garnet growth at ca. 455–445 Ma has been previously reported from across the Northern Highland Terrane (NHT) and Shetland, yet the metamorphic conditions are unknown and the tectonic …

us, gb (code pays fourni par la source)

Supplemental Material: Late Ordovician regional high-pressure metamorphism in Scotland, UK: Caledonian metamorphic climax predated the closure of the Iapetus Ocean

Thomas N. Lamont, et al.

Further details of petrography, thermobarometry, and field relationships.

Supplemental Material: Late Ordovician regional high-pressure metamorphism in Scotland, UK: Caledonian metamorphic climax predated the closure of the Iapetus Ocean

Thomas N. Lamont, et al.

Further details of petrography, thermobarometry, and field relationships.

Supplemental Material: Late Ordovician regional high-pressure metamorphism in Scotland, UK: Caledonian metamorphic climax predated the closure of the Iapetus Ocean

Thomas N. Lamont, et al.

Further details of petrography, thermobarometry, and field relationships.

Lithospheric Unzipping Explaining Hot Orogenesis During Continental Subduction

Douwe J.J. van Hinsbergen, Thomas N. Lamont, Carl Guilmette

Abstract Phanerozoic accretionary orogens typically contain upper crustal nappes derived from subducted lithosphere—oceanic or continental—that display (ultra‐)high‐pressure, low‐temperature ((U)HP‐LT) metamorphism. Surprisingly, such orogens often also contain coeval continent‐derived nappes that underwent “Barrovian” (MP‐HT) syn‐burial metamorphism instead. Here, we show examples from the …

nl, us, gb, ca (code pays fourni par la source)

Late Ordovician regional high-pressure metamorphism in Scotland: Caledonian metamorphic climax predated the closure of Iapetus

Thomas N. Lamont, William H. McCarthy, Robin A. Strachan, Nick M.W. Roberts et autres

We document newly recognised Late Ordovician high-pressure (HP) metamorphism in the Scottish Caledonides. Garnet growth at ca. 455–445 Ma within metabasic rocks from the Ross of Mull is constrained to pressures >0.9 GPa and was associated with formation of kyanite-bearing assemblages in …

LATE ORDOVICIAN HIGH-PRESSURE REGIONAL METAMORPHISM IN SCOTLAND: CALEDONIAN OROGENESIS PREDATED THE CLOSURE OF IAPETUS

Thomas N. Lamont, William H. McCarthy, Robin A. Strachan, Nick M.W. Roberts et autres

us, gb (code pays fourni par la source)

Tectonic controls on porphyry copper formation in the southwest USA

H. F. Bain, Dan Bevan, Thomas N. Lamont, F. J. Cooper et autres

The stratigraphic and geochronologic record for seamount collision and Eocene initiation of the Olympic subduction complex in the Blue Mountain Unit, western Washington

Erin Elizabeth Donaghy, Nicholas A. Regier, Michael Patterson Eddy, Kenneth D. Ridgway et autres

The metamorphic signature of lithospheric mantle delamination: Insights from the Naxos metamorphic core complex, Greece

Thomas N. Lamont, Nick M.W. Roberts, Andrew J. Smye, M. P. Searle et autres

Tectonic Controls on Porphyry Copper Formation in the Southwest USA

H. F. Bain, F. J. Cooper, Dan Bevan, Thomas N. Lamont et autres

Porphyry copper formation driven by water-fluxed crustal melting during flat-slab subduction

Thomas N. Lamont, Matthew A. Loader, Nick M.W. Roberts, F. J. Cooper et autres

Abstract The prevailing view of the formation of porphyry copper deposits along convergent plate boundaries involves deep crustal differentiation of metal-bearing juvenile magmas derived from the mantle wedge above a subduction zone. However, many major porphyry districts formed during periods of flat-slab …

gb, au (code pays fourni par la source)