Geochronology of Archaean and Proterozoic events in the Ammassalik area, South-East Greenland, and comparisons with the Lewisian of Scotland and the Nagssugtoqidian of West Greenland

Sources of Labrador Sea sediments since the last glacial maximum inferred from Nd-Pb isotopes

“…In addition, terranes constituting the North American Shield, which includes a large variety of structural units (Bridgewater et al, 1991;Kalsbeek et al, 1993, and references therein; Campbell et al, 1996, and references therein), have been distinguished and handled separately. Unfortunately, no shale or greywacke data is available for these terranes.…”

“…Five of these samples were recovered from three detrital carbonate-rich layers, respectively: the so-called detrital carbonate (DC) 1 related to HE 1, DC 0 related to HE 0 during the YD cold event, and a light detrital carbonate layer (see Stoner et al, 1996). (modified from McCartney, 1992;Schmitz and McCartney, 1993;Dickson and Brown, 1994;Lucotte and Hillaire-Marcel, 1994), and structural terranes outcropping in the nearby continents (after Bridgewater et al, 1991;Kalsbeek et al, 1993;Campbell et al, 1996) Nd isotopic data have been reported in Fagel et al (1999). Ages reported for each sample depth were estimated by direct linear interpolation of available AMS 14 C ages (italics), assuming a constant sedimentation rate, since they are relatively constant over short time intervals (Hillaire-Marcel et al, 1994b).…”

Metallogeny of Greenland

“…12; Wright et al, 1973;Myers, 1987;Kalsbeek et al, 1993). It is the result of Palaeoproterozoic collision of two Archean terranes, the NAC in the south and the EGA, sometimes correlated with the Rae craton, in the north Kolb, 2014).…”

“…2980, 2860, 2835, 2755, and 2735 Ma, pegmatites yield ages of ca. 2630 Ma interpreted as the age of amphibolite facies retrogression in the south (Leeman et al, 1976;Kays et al, 1989;Kalsbeek et al, 1993;Nutman et al, 2008b). However, amphibolite facies metamorphism at 650-700°C and 3-4 kbar in the Kangerlussuaq Fjord area was dated at ca.…”

Géochimie isotopique Sr-Nd-Pb des sédiments accumulés depuis 700 000 ans le long de la dorsale de Reykjanes (58-60ʻ Nord) /

“…Patchett et Bridgwater, 1984;Taylor et al, 1992;Kalsbeek et al, 1993;Bernstein et al, 1998;Fitton et al, 1998a et b) appalachiennes; cf. tableau 1).…”