5,623 research outputs found
U-Pn geochronology of deformed metagranites in central Sutherland, Scotland: evidence for widespread late Silurian metamorphism and ductile deformation of the Moine Supergroup during the Caledonian orogeny
No full textWithin the Caledonides of central Sutherland, Scotland, the Neoproterozoic metasedimentary rocks of the Moine Supergroup record NW-directed D2 ductile thrusting and nappe assembly, accompanied by widespread tight-to-isoclinal folding and amphibolite-facies metamorphism. A series of metagranite sheets which were emplaced and penetratively deformed during D2 have been dated using SHRIMP UâPb geochronology. Zircon ages of 424 8 Ma (Vagastie Bridge granite), 420 6 Ma (Klibreck granite) and 429 11 Ma (Strathnaver granite) are interpreted to date emplacement, and hence regional D2 deformation, during
mid- to late Silurian time. Titanite ages of 413 3 Ma (Vagastie Bridge granite) and 416 3 Ma (Klibreck granite) are thought to date post-metamorphic cooling through a blocking temperature of c. 550â 500 8C. A mid- to late Silurian age for D2 deformation supports published models that have viewed the internal ductile thrusts of this part of the orogen as part of the same kinematically linked system of forelandpropagating thrusts as the marginal Moine Thrust Zone. The new data contrast with previous interpretations that have viewed the dominant structures and metamorphic assemblages within the Moine Supergroup as having formed during the early to mid-Ordovician Grampian arcâcontinent orogeny. The mid-to late Silurian D2 nappe stacking event in Sutherland is probably a result of the collision of Baltica with the Scottish segment of Laurentia
Reflections about Professor Robert F. Lusch: Friend, Co-author and Marketing Visionary
No full textThis personal commentary offers some brief reflections about the late Professor Robert F. Lusch. These insights are offered by someone who knew him for many decades as a friend, colleague and co-author
A friend, Jan to Mr. Meredith (27 September 1962)
No full textSigned by A friend, Janhttps://egrove.olemiss.edu/mercorr_pro/1091/thumbnail.jp
Your friend, Sarah to Mr. Meredith (27 September 1962)
No full textSigned by Your friend, Sarahhttps://egrove.olemiss.edu/mercorr_pro/1597/thumbnail.jp
Remaining your friend always, J.M. to Dear Mr. Meredith (Undated)
No full textSigned by Remaining your friend always, J.M.https://egrove.olemiss.edu/mercorr_pro/1784/thumbnail.jp
Variations in the concentration of radon in parts of the Ogof Ffynnon Ddu system, Penwyllt, South Wales and estimates of doses to recreational cavers
No full textA description of the author\u27s experiences while selling alongside a friend at Ma
No full textA description of the author\u27s experiences while selling alongside a friend at Maine\u27s well-known Montsweag Flea Market in Woolwich, her interactions with some of the flea market\u27s dealers, collectors, and visitors, and her trips to other Maine flea markets
Correspondence from a friend
No full textA letter written by �a friend� to the �Milford Board.� The author speaks of how Ohio has been watching the boycott protesting the integration of Delaware schools. The author shares that they believe the government has acted in opposition to the people�s desires and contrary to the interests of the people, noting that nothing is unfair or unjust in segregation
Correspondence from a friend
No full textA letter written by �a friend� to the �Milford Board.� The author speaks of how Ohio has been watching the boycott protesting the integration of Delaware schools. The author shares that they believe the government has acted in opposition to the people�s desires and contrary to the interests of the people, noting that nothing is unfair or unjust in segregation
Valentine. When You Get a Valentine From a Friend
No full textA girl reads a heart-shaped card. Text: When you get a valentine from a friend, you know it\u27s meant to be a gentle hint he wants to be your beau.https://egrove.olemiss.edu/romance_revelry/1001/thumbnail.jp
- …
