Timing of Tertiary Extension in the Railroad Valley Pioche Transect, Nevada: Constraints from Ar-40/Ar-39 Ages of Volcanic Rocks

Time-space relations of extension and volcanism place critical constraints on models of Basin and Range extensional processes. This paper addresses such relations in a 130-km-wide transect in the eastern Great Basin, bounded on the east by the Ely Springs Range and on the west by the Grant and Quinn Canyon ranges. Stratigraphic and structural data, combined with 40Ar/39Ar isotopic ages of volcanic rocks, document a protracted but distinctly episodic extensional history. Field relations indicate four periods of faulting. Only one of these periods was synchronous with nearby volcanic activity, which implies that volcanism and faulting need not be associated closely in space and time. Based on published dates and the analyses reported here, the periods of extension were (1) prevolcanic (pre-32 Ma), (2) early synvolcanic (30 to 27 Ma), (3) immediately postvolcanic (about 16 to 14 Ma), and (4) Pliocene to Quaternary. The break between the second and third periods is distinct. The minimum gap between the first two periods is 2 Ma, but the separation may be much larger. Temporal separation of the last two periods is only suggested by the stratigraphic record and cannot be rigorously demonstrated with present data. The three younger periods of faulting apparently occurred across the entire transect. The oldest period is recognized only at the eastern end of the transect, but appears to correlate about 150 km northward along strike with extension in the Northern Snake Range-Kern Mountains area. Therefore the oldest period also is regional in extent, but affected a different area than that affected by younger periods. This relation suggests that distinct extensional structures and master detachment faults were active at different times. The correlation of deformation periods of a few million years duration across the Railroad Valley-Pioche transect suggests that the scale of active extensional domains in the Great Basin may be greater than 100 km across strike.

Gesellschaftskunde in der jüd. Schule : ein Vortr. von allgemeinem Interesse, geh. auf d. 39. Jahresversammlung d. isr. Lehrer-Konferenz Hessens

von A. Neuhaus

Ms. hebr. qu. 39 - Pinḳas

Vorbesitzer: Synagoge des jüdischen Spitals

An die Urwähler des 39. Stadtbezirkes: Die Unterzeichneten - Urwähler des 39sten Bezirkes - sind zusammen getreten, um bei dem Herannahen der Wahlen ...

Welsch (Projektbearbeiter): Aufruf von 47 Urwählern des Berliner 39. Bezirks zur Anerkennung der Verfassung vom 5. Dezember 1848 sowie der beiden Kammern. Unverzichtbar sind das parlamentarische Steuerbewilligungsrecht und freiheitliche Bezirks-, Kreis- und Gemeindeordnungen

Moses von Mohl, geboren in Schwaben, 39 3/4 Jahr alt

Welsch (Projektbearbeiter): Karikierende Darstellung eines Moses von Mohl (samt Wappen mit der Aufschrift: "Hony soit qui mal y pense"). Eine Person dieses Namens konnte nicht ermittelt werden; gemeint ist sicherlich der Politiker und spätere Abgeordnete der Frankfurter Nationalversammlung Moriz von Mohl

Genesis 31, 39-40 und anderes : Herrn Professor Dr. I. Heinemann, dem Sechzigjährigen, in Freundschaft und Verehrung gewidmet

Harry Torczyner

Ms. hebr. oct. 39 Film - Derashot

Vorbesitzer: Aaron Ben-Moses Fuld;

Ms. Barth. 39 - Scriptum super quartum Sententiarum

Vorbesitzer: Bartholomaeusstift Frankfurt am Main

Ms. Praed. 39 - Commentum in libros Physicorum Aristotelis

Vorbesitzer: Johannes de Francfordia; Jakob Heller; Dominikanerkloster Frankfurt am Main

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 39 - Zwei Kritikpunkte des Göttinger Studenten O. Bötticher an der "Welt als Wille und Vorstellung"

abgedruckt in: Schopenhauer-Jahrbuch 24 (1937), S 126-128

Ms. hebr. oct. 39 - Derashot

Vorbesitzer: Aaron Ben-Moses Fuld;

[Signatur: W 1153 Nr. 39]

Aus dem Sammelband "Lieder auf Flugblättern, 1"