...RAQUEL ROBLES-SALCEDO; GONZALO RIVAS; VICENT VICEDO; ESMERALDA CAUS Abstract This study examines the distribution of larger foraminifera in an upper Campanian–lower Maastrichtian siliciclastic–carbonate depositional environment within the Arén Sandstone Formation. Three assemblages have been...

... part of the Arén Formation, late Maastrichtian in age. This new lambeosaurine hadrosaurid is characterized by a jugal combining a hook-like dorsal edge of the posterior process and a narrow, D-shaped infratemporal fenestra. Blasisaurus differs from Arenysaurus from the Blasi 3 site of Arén mainly...

... of gold, which led to the formation of gold-rich veinlet ores in the stockwork core. White quartz formed at lower temperatures, 120–310 ºC, and 0.2–1.0 kbar, with the participation of Ca–Na–Cl-containing fluids with salinity of 2.0–11.0 wt.% NaCl equiv. In addition to H 2 O and CO 2 , hydrocarbons...

... of their anhydrous composition. The HCs of different classes (paraffins, olefins, naphthenes, arenes, and their N-, S-, Si-, and O-containing derivates) detected in FIs from sulfides and quartz are indicators of the reducing conditions of mineral formation at the Bogunai gold deposit. The Bogunai gold...

... facies transitions (Vallcarga, Aren, and Tremp formations, respectively). The deltaic deposits are grouped into four depositional sequences based on recognition and definition of sequence boundaries and systems tracts. The basinward migration of the depocenters was associated with uplifting and cyclic...

..., and Tahonas granodiorite, sequentially, into preexisting Mesozoic sediments and/or igneous rocks. Some of these intrusive events may have vented to the surface. After the intrusions were eroded, the San Jose, Arenal, and Casas Coloradas flow breccias were deposited. Between each episode of flow breccia...

...Figure 3. (A) Sedimentary logged section (see Fig. 2 for location) from the El Cajón basin with tuff T1 and AFT (Caj6, 12, 44, and 48) sample positions. (B) Corresponding formation names for the sedimentary section ( Bossi, 1992 ) (C) Seismic sequence characteristics from the Campo Arenal...

... Hydrocarbon group Oil family I II III IV V n -Alkanes 27.02 34.11 29.90 30.34 39.32 Isoalkanes 21.75 24.51 23.04 27.05 25.16 Cyclopentanes 12.52 16.77 18.03 21.68 17.14 Cyclohexanes 29.90 18.26 21.42 16.82 13.35 Arenes 8.82 6.35 7.62 4.12 5.04 Table...

... Caucasian, and Pannonian (Serbia) oil-and-gas-bearing basins. The hydrocarbon composition and molecular-mass distribution (MMD) of naphthene-arenes have been determined by mass spectrometry. Naphthene-benzene and naphthene-naphthalene molecules contain one to six naphthenic cycles, whereas naphthene...

...Fig. 1.— Locality map showing the collection site for the Soap Wash flora in central Utah. Shaded area is the outcrop extent of the Cedar Mountain Formation. Redrawn from Harris and Arens (in press). ...

... ; Nichols and Sweet 1993 ; Upchurch and Wolfe 1993 ), with the possible influence of fluctuations in atmospheric δ 13 C composition (e.g., Arens and Jahren 2000 , 2002 ). Our study reveals that the δ 13 C excursion across the K–T boundary in the Scollard Formation of Alberta did not reach anomalously...

...George Plafker abstract The April 13, 1973, earthquake ( M S = 6.5) in northwestern Costa Rica caused significant damage and the loss of 23 lives in a rural area of about 150 km 2 centered south of Laguna de Arenal. Earthquake-triggered failures of mountain slopes were the cause of all deaths...

... from the Urman and Tyumen’ Formations and their analogs (Lower-Middle Jurassic). Among them, there are only six condensate samples. The studied collection includes 14 oil and 1 condensate samples with abnormally high concentrations of light arenes (41.92–90.15% of total C 5 –C 8 ). Most...