... of the Saint Croix river. The northern limit of the district is near latitude 46° 25′, at the boundary line between Minnesota and Wisconsin; the southernmost point exposed is in the lower Dalles of the Saint Croix near Franconia (latitude 45° 15′), although the lava flows of the southern exposures stretch...

... at more satisfactory conclusions in regard to their age, some time has been devoted to them, during the last two years, with the results as given here-with. The Red Clastic Series In eastern and southeastern Minnesota there is a great thickness of red sediments lying below the Saint Croix Series and above...

... ranging from 5000–8000 m. The Mascarene and St. Croix terranes are less well constrained than the more outboard terranes on the models, in part because of limited physical property data but also because of the presence of the Saint George Batholith, which obscures relationships among stratigraphic units...

... evidence exists from which to determine maximum burial depths, the observed thermal maturity of the organic matter requires significantly greater burial depths, a higher geothermal gradient, or both. It is likely, at least on the Saint Croix horst, that thermal maturation of the organic matter in the Solor...

... by distensive tectonics resulting in a belt of basinward tilted blocks. The study area is limited to the west by the Sainte Croix lake, and to the east by the Escragnolles cliffs (fig. 2 ). From a structural point of view this area includes three different units [ Laurent et al ., 2000 ], which are from...

... 44.95 5.68 9 1962 6.57 115 309 5 22 72 5 24 30 4.6 4.6 5.5 4.6 5.5 5.5 Hydropower 4 Vouglans 46.38 5.67 27 1969 16 100 592 7 29 427 2 6 10 4.6 4.6 4.6 4.6 4.6 4.6 Hydropower 5 Sainte‐Croix 43.73 6.13 16 1975 22 93 767 1 12 274 %% 5 13 2.8 4...

... immediately adjacent to the Saint George batholith in the Silurian Mascarene basin (Fig. 1 ; Thorne and Lentz, 2001 ; Thorne et al., 2002 ), and the Anomaly A zone, 3 km to the northwest of the Main zone, hosted by Ordovician turbidites of the St. Croix belt (Fig. 1 ; Watters et al., 2003 ). The setting...

... at the Siline trench by Saint Fleur et al. (2020 ; T2). Triangles mark the locations of mountains, and thick dark blue lines show the locations of rivers discussed in this article. BH, The Bahamas (Inagua); BL, La Bullisoinare; BR, Breta ridge fault zone; CDB, Croix des Bouquets; CF, Carrefour (including...

... ( Tucker et al., 2001 ) Lincoln syenite. Similarly, 40 Ar/ 39 Ar hornblende cooling ages ( West et al., 1995 ) and ca. 420 Ma ages on plutons that overprint the regional metamorphism ( Tucker et al., 2001 ) require that amphibolite-facies metamorphism in the Saint Croix belt be no younger than Silurian...

...) proposed a preliminary comparison among the Stephanian permineralized floras of Grand' Croix, Saint Étienne basin, and coal-ball peats of the Illinois Basin. The floras from Grand' Croix were similar in the abundance of tree ferns and pteridosperms, but differed in their greater quantity of cordaitalean...

... ( Stewart et al., 1995 ). The implication drawn from these observations is that the Ordovician basement to the Mascarene belt was uplifted and thrust against the Saint Croix belt along the Sawyer Brook fault prior to Silurian time, which is supported by gravity modelling conducted in the Clarence Stream...

...J. Scherer Copyright © 1912, by the Seismological Society of America Works Consulted 1. de St. Méry Moreau Description topographique, physique, civile, politique et historique de la partie françoise de l'Isle Saint...

... 46.4°N, 66.7°W 4.5 Felt at Calais, Maine and Centreville, Doaktown, Fredericton, Hartland, Saint John, and Stanley, N.B. 19110827 ? 46.9°N, 65.6°W A Felt at Barnaby River and Millerton and in upper Miramichi River Valley, N.B. 19150627 14:25 UT 46.2°N, 67.0°W 3.8 Felt at Fredericton...

... the 515 Ma Mosquito Lake Road Formation has a value of +10.3‰. Samples of the Silurian-Devonian Saint George composite batholith, which intrudes the New River, Mascarene, and Saint Croix terranes, have δ 18 O WR values lying between +7.2 and +10.3‰. The modal mineralogical composition and the δ 18...

..., claystone (argilites); white rectangles, bituminous shales. A . Carte géologique simplifiée du bassin carbonifère et permien de Bourbon-l'Archambault montrant la localisation du nouveau gisement de Franchesse [modifiée d'après Paquette and Feys, 1989]. Symboles : points, roches post-permiennes ; croix...

... gneiss panel, including the particularly uplifted McGrath Dome (MG). Primary normal faults of the Midcontinent rift system regime are the Douglas fault (DF) and Lake Owens fault (LOF), which may have been reactivated in later compression to form the St. Croix horst (SCH). Four MT sites that were examined...

... Fig. 1. Regional geological setting of the Clarence Stream gold deposit. a . General map of terranes surrounding the Saint George batholith showing location of the Clarence Stream deposit (modified from Thorne and McLeod, 2003 ). b . Simplified geological map of Rollingdam area showing...

... and into the Carboniferous. 26 03 2002 16 08 2001 25 02 2002 The Williams Lake Formation is characterized by basaltic to andesitic flows, lithic to lithic-crystal lapilli tuff, laminated tuffaceous siltstone, wacke, and black slate. Flows consist of flow-aligned microphenocrysts of plagioclase...

... assembled into the Brunswick subduction complex during the Late Ordovician – Early Silurian closure of this basin. Llandeilo–Caradoc strata display the continent–ocean polarity best. In the Saint Croix (subFredericton trough) basement, orthoquartzites indicate proximity to a slowly subsiding continental...