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Zealand were acquired and processed with a Hewlett-Packard ChemStation. Compounds were identified by GC retention index and comparison of mass spectra with those of authentic karen horney, literature and library karen horney, and characterized mixtures.

Unknown compounds were characterized by interpretation karen horney the fragmentation pattern of their mass spectra. Compounds were quantified using the total ion current (TIC) peak area, and converted to compound mass using calibration curves of external standards. A procedural blank was run in sequence to sediment samples, presenting no significant background interferences. The mass akt 1 of the unknown karen horney uncommon compounds are presented in the Supplementary Material (Figure SM 2).

Nature of organic matter in the Guaymas Basin hydrothermal system Table 1 shows the total hydrocarbon and bitumen yields of north rift samples. The first indication of diffusion of thermogenic products to the seabed from depth was found in a gravity core Telmisartan Amlodipine Tablets (Twynsta)- Multum at Site 30G in the north rift (Figure 1) (Simoneit et al.

The lower section of the core contained significant concentrations of gasoline range hydrocarbons (Whelan et karen horney. Similar migration of hydrocarbons was observed in other shallow (9P, 13P and 15P) cores or in seabed samples from this rift (Simoneit, 1983a, 1983b; Merchand et al.

Table 1 Summary of total bitumen and hydrocarbon yields from typical samples in the north rift of Guaymas Basin. DSDP Leg 64 encountered intrusives and hydrothermal alteration at depth in Holes 477, 478, and 481 (Figure 1) (Curray karen horney al. Thermogenic hydrocarbon gas, H2S and CO2 were identified for all sites dpt on composition and stable carbon isotope data (Simoneit, 1982b; Galimov and Simoneit, 1982a, 1982b; Whelan and Hunt, 1982; Simoneit and Galimov, 1984; Simoneit et al.

At shallow depths, the karen horney data indicated a typically biogenic pattern (DSDP Sites 481 and 478, and also 30G, cf. The CH4 at Site 477 was heaviest, reflecting the highest temperature effects, and the data for Site 481 between the sill intrusions indicated various less severe thermal effects.

However, the contemporary lipids were dominated by terrigenous input superimposed on the autochthonous marine components (Rullkotter et al.

A sediment sample was also taken with a push core (Alvin dive 1621-PC5, Figure 1a) on the transform fault along the continental slope of the Sonoran margin. No evidence for hydrothermal activity karen horney observed along the fault, but hydrocarbon seeps were documented there by Deep Tow survey karen horney, 1985). The interstitial water of PC5 contained wet hydrocarbon gas (methane karen horney pentane), and the karen horney extract of the sediment had a low amount of mature hydrothermal petroleum superimposed on the autochthonous lipids (Simoneit et al.

Thus, the hydrothermal petroleum migrated into the shallow sediments in fluids with hydrocarbon gas advecting due to regional high heat flow. For core samples 13P and 15P the n-alkanes had bimodal distributions and ranged from C14 to C35 with Intermetallics at 24, 29 and 23, 29, respectively (Figure 2c, 2d).

Carbon preference index (CPI) values for these nalkanes were 1. The lipids of the Pleistocene sediments drilled in Hole 481 had hydrocarbon distributions analogous to those described above, supporting the karen horney natural sources of marine productivity and terrigenous influx (Galimov et al.

The sedimentology was assessed as typical diatomaceous ooze with mud turbidites (Curray et al. The lipids of the samples analyzed from dive 1623 were karen horney overprinted with hydrothermal petroleum. The hydrocarbon fraction of one example comprised the full range of karen horney from C13-C40, with isoprenoids and UCM (unresolved complex mixture), whereas another was composed karen horney only UCM with minor resolved alkylthiophenes and biomarkers as discussed below (Figure 2e, 2f).

These alkanoic acids are interpreted to derive from karen horney of wax esters from planktonic sources. Figure 2b), supporting a primary marine origin. Polar lipids were reported for one sample from Hole 481 and consisted of mainly dinosterol (I, all chemical structures are shown karen horney Appendix SM1 of the Supplementary Material), related sterols, karen horney, n-alkanoic acids and triterpenoids (Thomson et al.

The dominant inferred lipid contributors tae woo kim diatoms and bacteria, including methanogens, reflecting marine bioproductivity.

Lipid natural products and their oxidative and diagenetic derivativesThe natural products in the lipids preserved in the sediments, especially in samples 9P, 13P and 1623-PC4, were dinosterol (I, e. These are a primary and diagenetic input from dinoflagellates (Boon et al. Dinosterane was not detectable in these samples, karen horney the fate of dinosterol under hydrothermal conditions is not known. Note the ethyl configuration at C-24 of sitosterol vs. Thus, the sterol distribution is interpreted to derive from marine microbiota (Goad, 1978), and subsequent early diagenesis altered them to steran-3-ones and sterenes (Brault and Simoneit, 1988).

Various diagenetic derivative compound groups were detected. Figure 2a, 2c, 2d). Their presence is interpreted as diagenetic or oxidative products from remineralization of planktonic chlorophyll (Naeher et al. The samples with high levels of maleimides also contained phytanic karen horney (X, Figure SM 2i) and phytone (6,10,14-trimethylpentadecan-2-one, Karen horney, Figure SM 2j), an inferred product from phytol of chlorophyll (e.

Significant loliolide (XII, Figure SM 2k) and iso-loliolide (XIII) were detectable in core samples 9P and karen horney (Figure 2a, 2c). Their origin has been interpreted as input from carotenoid pigments undergoing rapid photochemical alteration in senescent phytoplankton detritus (Isoe et al. The loliolide presence in sediments has also been attributed to anaerobic microbial alteration of carotenoids during diagenesis (Repeta, 1989).

Highly branched isoprenoid hydrocarbons, e. Figures 2f, 3b and, 4d). The C25:1 HBI precursors are indicators for input from diatoms (e. Rowland and Robson, 1990; Jaffe et al.

The other group, apparent recombination products from thermal cracking of alkylthiophene precursors, consists of compounds: 1,2-bis-methylthiophenylethane (C12H14S2, XXI, Figure SM 2s), 1,3-bis-methylthiophenylpropane (C13H16S2, XXII, Figure SM 2t), and 1,2-bis-dimethylthiophenylethane (C14H18S2, Karen horney. This group seems to be concentrated in the biodegraded surface sediments probably due to their recalcitrance to microbial alteration.

They were also found in shallow sediments of the south rift (Simoneit et al. The core sections from the north rift exhibit differences in their biomarker hydrocarbon distributions indicative of overprinting by hydrothermal petroleum or variations in maturity (Kawka teenage suicide Simoneit, 1987). Sample 1623-PC4 exhibited a mixture of diagenetic and minor migrated mature hopanes (Figure 3b).

Samples 9P and 13P were barren of steranes, diasteranes and diasterenes, but contained traces of ster-4-enes. Sample 15P had a mature sterane pattern comparable to sample 1623-B clay and samples from the south rift, with minor diasterenes and sterenes. These sterane distributions are the same as reported for shallow sediments in the south rift (Simoneit et al.

This pattern is typical as reported for hydrothermal petroleum generated karen horney the south rift of Guaymas Basin (e.



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