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Part 2.2. Core Observation and Description

      Introduction

In this exercise, your instructor will assign you one or more cores from Table 2.1. A corresponding photo of each core can be accessed in the supplemental resources. Note that all of the cores in Table 2.1 are either core numbers 1, 2, or 3. This means that these cores are at or close to the top of the sediment sequence on the seafloor. Therefore, the sediment in these cores represents modern or very recent environmental conditions at that location in the ocean. For a review of the nomenclature for core identification, see Chapter 1, Part 2 (Figures 1.10 and 1.11).

TABLE 2.1. Seafloor cores.

	Core identification: expedition‐site &hole‐core&type1	Site location description	Site location (latitude/longitude)	Water depth (m)	References
	Pacific cores
1	112‐687A‐2H	Peru continental shelf	12.9S/77.0 W	316	Suess et al. (1988)
2	35‐324‐1	SE Pacific basin, North of Antarctica	69S/98.8 W	4433	Hollister et al. (1976)
3	28‐269‐1	Ross Sea, South of Australia, margin of Antarctica	61.7S/140.1E	4282	Hayes et al. (1975)
4	145‐886B‐2H	Chinook Trough, North Pacific abyssal plain	44.7 N/168.2 W	5743	Rea et al. (1993)
5	145‐882A‐2H	Detroit Seamount NW Pacific	50.36 N/167.6 E	3243.8	Rea et al. (1993)
6	145‐881A‐1	NW Pacific, east of the Sea of Okhotsk	47.1 N/161.5 E	5531.1	Rea et al. (1993)
7	145‐887C‐2H	Patton‐Murray Seamount, NE Pacific	54.4 N/148.5 W	3633.6	Rea et al. (1993)
8	19‐188‐2	Bering Sea	53.8 N/178.7 E	2649	Creager et al. (1973)
9	18‐182‐1	Alaskan continental slope	57.9 N/148.7 W	1419	Kulm et al. (1973)
10	33‐318‐2	Line Islands Ridge, south central Pacific	14.8 S/146.9 W	2641	Schlanger et al. (1976)
11	8‐75‐1	Marquesas Fracture Zone, central Pacific abyssal plain	12.5 S/135.3 W	4181	Tracey et al. (1971)
12	92‐597‐1	SE Pacific abyssal plain	18.8 S/129.8 W	4166	Leinen et al. (1986)
13	178‐1101A‐2H	Antarctic Peninsula continental rise	64.4 S/70.3 W	3279.7	Barker et al. (1999)
14	178‐1096A‐1H	Antarctic Peninsula continental rise	67.57 S/77.0 W	3152	Barker et al. (1999)
15	178‐1097A‐3R	Antarctic Peninsula shelf	66.4 S/70.75 W	551.7	Barker et al. (1999)
16	29‐278‐3	South of New Zealand	56.6 S/160.1 E	3675	Kennett et al. (1974)
17	202‐1236A‐2H	Nazca Ridge, SE Pacific	21.4 S/81.44 W	1323.7	Mix et al. (2003)
18	8‐70‐1	Central equatorial Pacific	6.3 N/140.4 W	5059	Tracey et al. (1971)
19	138‐844B‐1	Eastern equatorial Pacific	7.9 N/90.5 W	3425	Mayer et al. (1992)
20	136‐842A‐1H	South of Hawaii	19.3 N/159.1 W	4430.2	Dziewonski et al. (1992)
21	198‐1209A‐2H Скачать книгу В начало<14151617181920212223>В конец