Palaeozoic palaeogeography of Mexico: constraints from detrital zircon age data

Abstract

Detrital zircon age populations from Palaeozoic sedimentary and metasedimentary rocks in Mexico support palinspastic linkages to the northwestern margin of Gondwana (Amazonia) during the late Proterozoic -Palaeozoic. Age data from: (1) the latest Cambrian-Pennsylvanian cover of the c.

Magmatic source and metamorphic grade of metavolcanic rocks from the Granjeno Schist: was northeastern Mexico a part of Pangaea?

“…In Mexico, details of the Laurentia–Gondwana collision remain controversial (Mickus and Montana, ). Even though several studies have examined the Palaeozoic of northeastern Mexico (Carrillo‐Bravo, ; De Cserna and Ortega‐Gutiérrez, ; Ramírez‐Ramírez, , ; Cossío Torres, ; Torres‐Sánchez et al ., ; Castillo‐Rodríguez, ; Orozco‐Esquivel, ; Ortega‐Gutiérrez et al ., ; Ehricke, ), the development of the Palaeozoic (Silurian to Carboniferous) basement rocks has received less attention (Keppie and Ramos, ; Dowe et al ., ; Nance et al ., , , ; Nance and Linnemann, ; Torres‐Sánchez, ; Barboza‐Gudiño et al ., ). The origin and evolution of the Silurian and Carboniferous units, which are part of the Palaeozoic basement in northeastern Mexico, are not completely understood.…”

Tectonic escape of a crustal fragment during the closure of the Rheic Ocean: U–Pb detrital zircon data from the Late Palaeozoic Pulo do Lobo and South Portuguese zones, southern Iberia

“…These data are compared with detrital zircon data from the Early Silurian Kirkcolm Formation of the Southern Uplands Terrane of the British Caledonides (Waldron et al 2008), Meguma Terrane from the Northern Appalachians (after Waldron et al 2009) and the Devono-Carboniferous Horton Group from the St. Mary's Basin of the Northern Appalachians(Murphy & Hamilton 2000). Also shown are tectonothermal events in eastern Laurentia, Baltica, the Amazon craton and the West Africa craton (afterNance et al 2009). Light red bands denote gaps in zircon populations.…”

Peri-Amazonian provenance of the Central Dobrogea terrane (Romania) attested by U/Pb detrital zircon age patterns

“…The relatively slight contribution of the Grenvillian sources and the remarkable input from Paleoproterozoic and Archean sources, suggest an initial location of the Central Dobrogea not far from the West African Craton. The Amazonian sources illustrated by Nance et al (2009) including the relative gaps around 1.8 Ga and between 2.2-2.6 Ga almost perfectly correlate with the Central Dobrogea sources. Consequently, the Central Dobrogea terrane represents a peri-Amazonian crustal fragment that joined other Moesia basement components during the Cambrian Period.…”

“…Nance et al 2009) is the most important Neoproterozoic detrital zircon source. Regarding the Mesoproterozoic, Paleoproterozoic and Archean sources, they are quite similar to the present-day sources of detrital zircon described by Rino et al (2008) at the Amazon and Niger rivers mouths (i.e.…”