Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX)

Knowledge of the long-term history of the perennial ice is an important issue that has eluded study because the Cenozoic core material needed has been unavailable until the recent Arctic Coring Expedition (ACEX). Detrital Fe oxide mineral grains analyzed by microprobe from the last 14 Ma (164 m) of the ACEX composite core on the Lomonosov Ridge were matched to circum-Arctic sources with the same mineral and 12-element composition. These precise source determinations and estimates of drift rates were used to determine that these sand grains could not be rafted to the ACEX core site in less than a year. Thus the perennial ice cover has existed since 14 Ma except for the unlikely rapid return to seasonal ice between the average sampling interval of about 0.17 Ma. Both North America and Russia contributed significant Fe grains to the ACEX core during the last 14 Ma.

Under the Table rock Niagara falls, March 20, 1856.

[From Jasper Cropsey Sketch book, 1855-1856]

At Niagara Falls.

[From Jasper Cropsey Sketch book, 1855-1856]

Sky at Niagara Falls, March 20, 1856.

[From Jasper Cropsey Sketch book, 1855-1856]

Mist at Niagara Falls.

[From Jasper Cropsey Sketch book, 1855-1856]

Greek writers of Roman history : some reflections upon the authorities used by Plutarch and Appianus /

The fons primarius of Plutarch's life of Fabius Maximus. -- The common Greek sources of Plutarch and Appianus for Roman history. -- King Juba's Historia romana.

Past environment from historical sources /

"PB-231 711."

The history of Canada : from its first discovery to the present time.

Mode of access: Internet.

The history of Virginia's navy of the revolution,

"Roster of the Virginia navy of the revolution": p. [137]-271.

West Virginia Jewry: origins and history, 1850-1958.

"Sources for the history of West Virginia Jewry, literary and personal": p. lxiv-lxxix.

Earthquake history of the United States ...

This publication replaces Special publication 149, Earthquake history of the United States exclusive of the Pacific region, 1928, and Special publication 191, Destructive and near-destructive earthquakes in California and western Nevada, 1934. cf. pt. II, p. 1.

Manuel du citoyen français : recueil des constitutions qui ont régi la France depuis 1791 jusqu'à ce jour ; contenant la corrélation de tous les articles entre eux et suivi d'une table méthodique des matières.

Mode of access: Internet.

History of the Roman people,

To the original work, which ends with Theodosius I, the period from that time to the time of Charlemagne has been added by the editor (p. 421-486) cf. Pref.

Annals of an era; Percy MacKaye and the MacKaye family, 1826-1932; a record of biography and history, in commentaries and bibliography.

"The MacKaye collection, a supplemental bibliography, 1761-1931, of material preserved at the Dartmouth College Library ... compiled chiefly from original sources in the archives of Steele MacKaye and Percy MacKaye, by Marion Morse MacKaye": p. [299]-534.

The early history of land-holding among the Germans.

Sources of information: p. [111]-122; Literature of subject: p. 252-264.