... interfingering lava-rich associations: the quartz-feldspar-porphyritic Eastern sequence and the largely feldspar-porphyritic Central Volcanic Complex. This lava-rich zone interfingers with the western volcano-sedimentary sequences, herein referred to as: the Yolande River sequence, the Dundas Group...

...M. L. Wade; M. Solomon Abstract The host rocks of copper sulfide ores in the Mount Lyell district, Tasmania, are quartzose sericitic and chloritic schists regarded as altered equivalents of geosynclinal sedimentary and volcanic rocks of the Cambrian Dundas group and overlying Ordovician...

..., Huddersfield HD1 3DH, UK 3Limestone Research Group GEES (School of Geography, Earth & Environmental Sciences) University of Birmingham, Edgbaston, Birmingham B15 2TT, UK 4Worthington Groundwater, 55 Mayfair Avenue, Dundas, Ontario, Canada, L9H 3K9 5Consultant Hydrogeologist, 12 Culcheth Hall...

..., on the Zeehan–Dundas mining field in northwestern Tasmania, Australia. The mineral also occurs in small amounts at the Callenberg nickel deposit, Saxony, Germany. Petterdite forms thin crusts made up of tiny platy crystals up to about 15 μm across, associated with crocoite and anglesite at the type locality...

...Anthony R. Kampf; Stuart J. Mills; Robert M. Housley; Ralph S. Bottrill; Uwe Kolitsch Abstract The new mineral reynoldsite, Pb 2 Mn 4+ 2 O 5 (CrO 4 ), occurs at the Blue Bell claims, near Baker, San Bernardino County, California, U.S.A., and at the Red Lead mine, Dundas, Tasmania, Australia...

...Fig. 6. Exposures of the Thule Supergroup. ( a ) Exposure of the upper Narssârssuk Group on Saunders Island. Yellow circle highlights 2 m tall fishing hut for scale. ( b ) Exposure of the Steensby Land Formation in the Dundas Group at Dundas Fjeld capped by basaltic sill. Dundas Fjeld is roughly...

... —   —   —   —   —   The eastern zone of the Dundas valley is at the lowest end of the buried bedrock valley system and is underlain predominantly by shales and gypsum of the Salina Group and dolostones of the Lockport Group. The valley-filling sequence consists of a shorter and much simpler stratigraphic record consisting...

...Donald Lindsay Hurst At the western end of Lake Ontario, the Dundas valley, a major re-entrant in the Niagara Escarptment, was formed by river dissection of a more highly fractured zone at the crest of an anticline whose strike is nearly that of the present valley. The culmination of this erosion...

... Island ( Fig. 2 ; Table 1 ). Most were collected from southern Melville Island, including Cape Victoria (site 3) and across the length of Dundas Peninsula (sites 1, 2, 4, and 5; Fig. 2 ). The erratics can be broadly subdivided into three groups based on lithology: (1) granite ( n = 15), (2) quartzite...

...Peter Bernard Smoor This study describes the analysis of orientation measurements of elongated quartz grains in graywackes of turbidite nature of the Normanskill Formation of New York and the Quebec Group of Quebec. Definite relationships are demonstrated between the direction of flow, as indicated...

... that is critical to understanding the geology of and ore distribution in the district ( Figs. 1 , 2 ). Showing locations (App. 1) are grouped into four areas ( Figs. 1 , 4 , 5 ) based on the tectonic elements of the Boothia uplift and Ellesmerian orogen. Showings are hosted throughout the stratigraphy ( Fig...

.... The Dundas bedrock valley is the western extension of the Lake Ontario Basin. No comparable bedrock valleys were found to connect it to the Milverton valley for a joint drainage system as previously suggested. The Laurentian bedrock trough is the southeastward extension of the Georgian Bay Basin, both...

... into oblivion. He deserves wider recognition, however, for his appreciation of the principles which are now accepted as the basis of modern practice, as much as for his realisation that a sound palaeontological subdivision ought to be based on a single fossil group and that, in the Lias, the Ammonites were...

...Serina Diniega; Shane Byrne; Nathan T. Bridges; Colin M. Dundas; Alfred S. McEwen Abstract Martian slope gullies are argued to be evidence for recent liquid water flow on the surface of Mars. To explain the source of water, a wide range of environmental conditions and processes has been invoked...

...~ENSIONAL GRAIN ORIENTAT ION STUDIES OF TURBID ITE GRAYWACKES PETER BERNARD SMOOR 1960, MeMaster University, M.Se. This study describes the analysis of orientation measurements of e longated quartz grains in g raywackes of turbidite nature of the Normansk i l l Format ion of New York and the Quebec Group...

... shale and DCW subsets overlap in the majority of wells and are completely separated at their 80% variance only in Apollo A-73 and Dundas C-80 wells. There is no statistically significant distinction between Blackley, Cape de Bray, and Weatherall subsets in the DCW grouping, but Blackley tends to overlap...

... Stereo Pipeline software ( https://ti.arc.nasa.gov/tech/asr/groups/intelligent-robotics/ngt/stereo/ ) using images PSP_004176_1405 and PSP_005587_1405. (B) Elevation profiles from panel A. (C) Frequency distribution of martian gullies averaged over gully length in 2° bins measured from Mars Orbiter Laser...