Citation:

epic.28225.d001

Name: (Table 1) Detrital modes for sand grains in sediment core CRP-3
Creator: John L Smellie
Published: 2001
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Detrital modes determined on 68 sandstone samples from CRP-3 drillcore indicate a continuation of the dynamic history of uplift-related erosion and unroofing previously documented in CRP-1 and CRP-2/2A. The source area is identified very strongly with the Transantarctic Mountains (TAM) Dry Valleys block in southern Victoria Land. Initial unroofing of the TAM comprised removal of much of a former capping sequence of Jurassic Kirkpatrick basalts, which preceded the formation of the Victoria Land Basin. Erosion of Beacon Supergroup outcrops took place during progressive uplift of the TAM in the Oligocene. Earliest CRP-3 Oligocene samples above 788 metres below the sea floor (mbsf) were sourced overwhelmingly in Beacon Supergroup strata, including a recognisable contribution from Triassic volcanogenic Lashly Formation sandstones (uppermost Victoria Group). Moving up-section, by 500 mbsf, the CRP-3 samples are depauperate quartz arenites dominantly derived from the quartzose Devonian Taylor Group. Between c. 500 and 450 mbsf, the modal parameters show a distinctive change indicating that small outcrops of basement granitoids and metamorphic rocks were also being eroded along with the remaining Beacon (mainly Taylor Group) sequence. Apart from enigmatic fluctuations in modal indices above 450 mbsf, similar to those displayed by samples in CRP-2/2A, the CRP-3 modes are essentially constant (within a broad data scatter) to the top of CRP-3. The proportion of exposed basement outcrop remained at < 20 %, indicating negligible uplift (i.e. relative stability) throughout that period.

Project(s):

Cape Roberts Project (CRP)

Coverage:

Latitude: -77.006000 * Longitude: 163.719000

Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00

Minimum DEPTH, sediment/rock: 24.32 m * Maximum DEPTH, sediment/rock: 787.66 m

Event(s):

CRP-3 * Latitude: -77.006000 * Longitude: 163.719000 * Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00 * Elevation: -295.0 m * Penetration: 939 m * Recovery: 936 m * Location: Ross Sea * Campaign: * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 11.76 km at 76° true from Cape Roberts, 2.04 km at 225° true from CRP-2. Fast ice thickness: 2.0 to 2.2 m. Sea rise embedded to 9.55 mbsf. Lateral ice movement from spudding 5.0 m to 82° true. HQ core to 345.85 mbsf. NQ core to 939.42 mbsf. Core recovery 97%. Phase 1 logging to 345 mbsf, Phase 2 logging to 773 mbsf, Phase 3 logging to 918 mbsf. Deepest Cenozoic lithology and depth: sandstone breccia from 822.87 to 823.11 mbsf. Age of oldest Cenozoic strata: earliest Oligocene or latest Eocene. Deepest core lithology and depth: light red-brown quartz-cemented quartz sandstone to 939.42 mbsf. Age of bedrock: (mid?) Devonian.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Grain size description	Grain size descr		Smellie, John L
3	Quartz, angular	Qz ang	%	Smellie, John L	Coarse fraction/modal analysis
4	Quartz, rounded	Qz round	%	Smellie, John L	Coarse fraction/modal analysis
5	Plagioclase	Pl	%	Smellie, John L	Coarse fraction/modal analysis
6	Feldspar	Fsp	%	Smellie, John L	Coarse fraction/modal analysis	Alkali feldspar
7	Pyroxene	Pyrox	%	Smellie, John L	Coarse fraction/modal analysis	Total
8	Amphibole	Amp	%	Smellie, John L	Coarse fraction/modal analysis	Total
9	Biotite	Bt	%	Smellie, John L	Coarse fraction/modal analysis
10	Muscovite	Ms	%	Smellie, John L	Coarse fraction/modal analysis
11	Quartz, polycrystalline	PolyQz	%	Smellie, John L	Coarse fraction/modal analysis
12	Sedimentary rock	Sedim rock	%	Smellie, John L	Coarse fraction/modal analysis	Sedimentary lithic grains
13	Volcanite	Volcanite	%	Smellie, John L	Coarse fraction/modal analysis	Volcanic lithic grains (graphic)
14	Volcanite	Volcanite	%	Smellie, John L	Coarse fraction/modal analysis	Volcanic lithic grains (mosaic)
15	Volcanite	Volcanite	%	Smellie, John L	Coarse fraction/modal analysis	Volcanic lithic grains (feathery)
16	Volcanite	Volcanite	%	Smellie, John L	Coarse fraction/modal analysis	Volcanic lithic grains (lathy)
17	Metamorphite	Metam	%	Smellie, John L	Coarse fraction/modal analysis	Metamorphic lithic grains
18	Volcanic glass, brown	Volc glass brown	%	Smellie, John L	Coarse fraction/modal analysis
19	Opaque minerals	Opaque	%	Smellie, John L	Coarse fraction/modal analysis
20	Components indeterminata	Comp indet	%	Smellie, John L	Coarse fraction/modal analysis
21	Matrix	Matrix	%	Smellie, John L	Coarse fraction/modal analysis
22	Minerals	Minerals		Smellie, John L	Coarse fraction/modal analysis	Accessory minerals: biot = biotite, carb = carbonate, gt = garnet, epid = epidote, hbl = hornblende, sph = sphene, musc = muscovite, opq = opaques, zirc = zircon

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

1427 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Grain size descr	3 Qz ang [%]	4 Qz round [%]	5 Pl [%]	6 Fsp [%] (Alkali feldspar)	7 Pyrox [%] (Total)	8 Amp [%] (Total)	9 Bt [%]	10 Ms [%]	11 PolyQz [%]	12 Sedim rock [%] (Sedimentary lithic grains)	13 Volcanite [%] (Volcanic lithic grains (graphic))	14 Volcanite [%] (Volcanic lithic grains (mosaic))	15 Volcanite [%] (Volcanic lithic grains (feath...)	16 Volcanite [%] (Volcanic lithic grains (lathy))	17 Metam [%] (Metamorphic lithic grains)	19 Opaque [%]	20 Comp indet [%]	21 Matrix [%]	22 Minerals (Accessory minerals: biot = bi...)
24.32	very fine sand-fine sand(-medium sand)	59	8	12	7	11	0.0	0.0	0.0	0.0	0.0	1.7	0.0	0.0	0.3	0.0	0.7	0.0	23	hbl?, biot?
33.30	(very fine sand)fine sand	58	7	18	2	13	0.0	0.0	0.0	0.0	0.3	0.0	0.0	0.3	1.0	0.0	1.0	0.0	6	hbl?
67.06	very fine sand-fine sand(-medium sand)	55	11	15	5	9	0.0	0.0	0.0	0.0	0.0	2.7	1.3	0.0	0.7	0.3	0.3	0.0	26	biot, sph
74.85	very fine sand-medium sand	60	10	7	9	11	0.0	0.0	0.0	0.3	0.0	2.7	0.0	0.3	0.0	0.0	1.0	0.0	28	hbl, sph, zirc
89.50	silty very fine sand-fine sand(-C)	56	4	18	8	12	0.3	0.3	0.0	0.0	0.0	0.3	0.0	0.0	0.0	0.0	0.3	0.0	34	musc, gt, sph, clinozoisite?, bioclastic carb
139.87	very fine sand	67	4	10	6	11	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.3	0.0	0.0	1.3	0.3	20	hbl, biot?, sph?
151.25	very fine sand-fine sand	64	6	13	6	9	0.0	0.0	0.0	0.0	0.0	0.7	0.0	0.3	0.3	0.0	0.7	0.3	24	sph?
177.22	very fine sand-fine sand	61	19	7	4	6	0.0	0.0	0.0	0.0	0.0	1.0	0.0	1.7	0.3	0.0	0.0	0.0	16	hbl, biot, zirc, epid, opq
183.69	very fine sand-fine sand	68	15	6	4	5	0.0	0.0	0.0	0.0	0.0	0.7	0.3	0.0	0.7	0.0	0.3	0.0	10	hbl, zirc
202.59	fine sand	75	10	5	5	2	0.0	0.0	0.0	0.0	0.0	0.3	0.7	0.0	0.0	0.0	1.7	0.0	7	hbl, biot, musc, gt, sph
226.42	fine sand-medium sand	45	26	17	2	5	0.0	0.0	0.0	0.0	0.0	1.0	0.3	1.7	0.7	0.0	1.0	0.0	18	biot?, musc
235.50	fine sand	70	10	6	6	6	0.3	0.0	0.0	0.3	0.0	0.3	0.3	0.0	0.0	0.0	0.3	0.0	9	biot
249.67	fine sand	64	21	5	4	5	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.3	0.7	0.0	0.3	0.0	18	hbl, biot, musc, zirc, detrital carb?, gt
256.66	very fine sand(-fine sand)	63	16	5	9	3	0.7	0.3	0.0	0.0	0.0	0.0	0.3	0.0	0.3	0.0	0.7	1.0	14	musc, biolastic and detrital? carb, zirc, gt, sph
270.99	medium sand	56	24	7	4	2	0.3	0.3	0.7	0.0	0.7	0.0	0.0	2.0	0.3	0.0	2.3	0.0	1	all micas occur within Ls grains
279.68	very fine sand	68	11	7	7	5	0.0	0.0	0.0	0.0	0.0	0.0	1.3	0.0	0.3	0.0	0.3	0.0	10	biot?, musc, epid
286.17	very fine sand	68	3	10	11	4	0.3	0.0	0.0	0.0	0.0	0.0	0.3	0.3	0.0	0.0	2.3	0.3	12	musc?, sph?, clinozoisite?, zirc, gt
315.77	very fine sand-medium sand	62	17	5	6	6	0.0	1.0	0.0	0.0	0.0	0.0	0.3	0.3	0.0	0.0	2.7	0.0	21	musc, bioclastic carb, zirc
326.77	medium sand	73	16	7	2	1	0.0	0.0	0.3	0.0	0.0	0.3	0.7	0.0	0.0	0.0	0.3	0.0	17	hbl, biot, musc?, zirc, sph, gt
335.96	very fine sand-fine sand	67	9	7	6	5	0.0	0.0	0.0	0.0	0.0	0.3	0.7	0.7	0.0	0.3	0.3	0.0	12	hbl, biot, musc?, zirc, sph, gt
345.76	fine sand-medium sand	61	30	5	1	1	0.0	0.0	0.0	0.3	0.0	0.0	0.0	0.0	0.0	0.0	1.0	0.0	5	hbl?, biot, musc, zirc
358.95	fine sand	63	10	12	7	5	0.0	0.0	0.0	0.0	0.0	0.7	1.0	0.0	0.3	0.0	0.3	0.0	14	hbl, biot?, zirc, gt, epid
369.64	very fine sand-fine sand	55	13	17	3	7	0.0	0.0	0.0	0.0	0.0	0.3	1.7	1.0	0.7	0.0	1.0	0.0	13	hbl, biot, epid
375.32	fine sand-medium sand	55	33	5	2	3	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.7	0.3	0.0	0.7	0.3	12	biot, zirc, gt
383.76	fine sand	62	21	5	3	3	0.0	0.0	0.0	0.0	0.0	1.0	1.3	0.7	1.7	0.0	0.3	0.0	22	musc, zirc?
387.46	fine sand-medium sand	72	19	6	1	0	0.0	0.0	0.0	0.0	0.0	0.7	0.0	0.3	0.3	0.0	0.0	0.3	9	hbl, zirc, gt, opq, sph, epid?
396.58	fine sand-medium sand	53	29	4	5	3	0.0	0.0	0.0	0.0	0.0	2.3	0.7	0.7	1.0	0.0	0.3	0.3	12	hbl, zirc
405.75	very fine sand	58	3	8	21	1	0.0	0.3	0.0	0.0	0.0	0.0	0.7	0.0	0.3	0.0	7.0	0.0	19	hbl, biot?, musc, zirc, gt, epid, sph?
415.94	very fine sand-fine sand	67	12	4	12	1	0.0	0.0	0.0	0.0	0.0	0.3	0.7	0.3	0.0	0.0	2.3	0.3	17	hbl, musc, gt, zirc, sph?, detrital carb?
426.77	fine sand	65	21	3	7	2	0.0	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.3	0.0	0.0	0.0	10	hbl, biot, opq, zirc
437.12	very fine sand	69	7	6	16	1	0.0	0.0	0.0	0.0	0.0	0.3	0.7	0.0	0.0	0.0	0.3	0.0	19	hbl, gt, sph, zirc
449.73	fine sand	64	28	2	3	1	0.0	0.0	0.0	0.7	0.0	0.0	0.3	0.0	0.3	0.0	0.7	0.0	24	hbl, musc, gt, sph?
455.81	very fine sand	66	16	6	8	2	0.0	0.0	0.0	0.0	0.0	0.0	0.7	0.0	0.3	0.0	0.3	0.0	9	hbl, biot, musc, zirc, sph, gt
460.13	very fine sand-fine sand	73	13	4	7	2	0.3	0.0	0.0	0.0	0.0	0.3	0.7	0.0	0.0	0.0	0.3	0.0	16	biot, musc, zirc, sph, gt
473.61	(fine sand-)medium sand	61	25	3	8	1	0.0	0.0	0.0	0.0	0.0	0.0	0.7	0.0	0.0	0.0	0.7	0.0	14	hbl, sph
480.68	fine sand-medium sand	60	26	6	2	4	0.0	0.0	0.0	0.0	1.0	0.7	0.0	0.0	0.7	0.0	0.3	0.0	20	hbl?, zirc
486.03	fine sand	56	34	4	3	0	0.0	0.0	0.0	0.0	0.0	2.0	0.0	0.0	0.7	0.0	0.3	0.0	4	hbl, musc
495.15	fine sand-medium sand	55	43	0	1	0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.0	0.0	1	hbl, biot, musc, opq
500.12	fine sand-medium sand	52	0	1	0	0	0.0	0.0	0.0	0.0	0.0	0.3	0.3	0.0	0.3	0.0	0.0	0.0	1	biot, zirc, gt
509.36	fine sand	55	32	4	5	1	0.0	0.3	0.0	0.0	0.0	0.7	1.0	0.0	0.3	0.0	0.3	0.0	7	hbl
513.17	fine sand(-medium sand)	54	40	2	3	0	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.0	0.3	0.0	0.0	0.0	5	hbl, opq, zirc
525.36	medium sand	41	53	1	1	1	0.0	0.0	0.0	0.0	0.7	0.7	0.3	0.0	1.0	0.0	0.7	0.0	17	biot, zirc
533.26	medium sand-C	51	40	1	5	3	0.0	0.0	0.0	0.0	0.0	0.0	0.3	0.0	0.0	0.0	0.0	0.0	4	hbl, biot, musc, zirc, gt, opq
543.87	very fine sand-fine sand	58	18	7	11	3	0.0	0.0	0.0	0.0	0.0	0.7	1.3	0.0	1.0	0.0	0.0	0.0	19	hbl, zirc, opq
550.03	very fine sand-fine sand	66	12	5	9	5	0.0	0.0	0.0	0.0	0.0	0.0	3.3	0.0	0.3	0.0	0.3	0.0	21	hbl, biot, zirc
562.65	(fine sand)-medium sand	58	38	2	2	0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	18
571.80	fine sand	67	29	2	1	0	0.0	0.0	0.0	0.0	0.0	0.7	0.0	0.0	0.3	0.0	0.0	0.3	0	hbl, muse, gt, opq
578.24	fine sand	59	26	6	6	2	0.0	0.0	0.0	0.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.3	20	hbl, zirc, gt
585.75	(very fine sand)fine sand(-medium sand)	71	11	7	5	2	0.0	0.0	0.0	0.0	0.0	2.0	2.0	0.0	0.3	0.0	0.3	0.0	11	hbl, biot
595.16	very fine sand-fine sand(-medium sand)	69	9	4	8	3	0.0	0.0	0.0	0.0	0.0	1.7	3.7	0.3	0.3	0.0	0.0	0.3	12	hbl, zirc
610.95	fine sand	67	14	6	6	1	0.0	0.0	0.0	0.0	0.0	1.0	4.0	0.0	0.3	0.0	0.0	0.0	4	hbl, musc, zirc
615.37	very fine sand(-fine sand)	68	13	5	9	3	0.0	0.0	0.0	0.0	0.3	0.3	1.7	0.0	0.3	0.0	0.0	0.3	7	hbl, clinozoisite?, sph?, gt, opq
626.18	(very fine sand-)fine sand	61	25	2	4	2	0.0	0.0	0.0	0.0	0.0	1.3	2.7	0.3	0.7	0.3	0.0	0.0	11	hbl, biot, musc, zirc, opq
630.38	fine sand	66	15	6	4	6	0.0	0.0	0.0	0.0	0.0	0.3	2.3	0.3	0.3	0.3	0.0	0.0	20	hbl, biot, zirc
643.11	fine sand-medium sand	63	13	6	7	8	0.0	0.0	0.0	0.0	0.0	0.3	1.3	0.3	0.0	0.3	1.0	0.0	21	hbl, biot, zirc, clinozoisite?
655.86	very fine sand	54	5	16	12	4	0.0	0.0	0.0	0.3	0.0	1.3	5.3	0.0	0.7	0.3	0.3	0.0	21	hbl, musc, zirc
664.03	fine sand	62	11	12	7	2	0.0	0.0	0.0	0.7	0.0	0.7	2.3	0.0	0.7	0.0	2.3	0.0	13	hbl, biot, musc, gt, epid, sph
673.28	very fine sand-fine sand	55	17	13	9	2	0.0	0.0	0.0	0.3	0.0	1.3	1.3	0.0	0.7	0.0	0.7	0.0	23	hbl, biot, musc, clinozoisite, sph, gt, zirc
681.02	very fine sand(-fine sand)	51	12	10	8	7	0.0	0.0	0.0	0.0	0.0	1.7	7.3	0.0	0.3	0.0	1.3	0.0	26	biot, musc, sph?
686.52	fine sand	58	21	9	5	3	0.0	0.0	0.0	0.3	0.3	0.3	2.3	0.3	0.3	0.3	0.3	0.0	18	hbl, biot, musc, sph?, epid
696.77	very fine sand-fine sand	49	8	23	11	4	0.0	0.0	0.0	0.7	0.0	0.7	3.0	0.0	0.0	0.7	0.7	0.0	25	hbl, epid?
715.48	fine sand-medium sand	44	13	16	5	14	0.0	0.0	0.0	0.0	0.0	2.7	3.7	0.0	0.3	0.3	0.3	0.3	13	musc, sph, zirc, gt
724.08	very fine sand-fine sand	52	11	15	10	7	0.0	0.0	0.0	0.3	0.0	1.7	2.7	0.0	0.7	0.0	0.7	0.0	32	hbl, musc, zirc, gt, sph
730.87	very fine sand	61	9	11	10	3	0.0	0.0	0.0	0.0	0.0	0.0	4.7	0.0	0.0	0.0	0.7	0.0	22	hbl, biot, epid?, zirc, sph
737.35	very fine sand-fine sand	53	11	16	9	6	0.0	0.3	0.0	0.3	0.0	0.3	4.0	0.0	0.0	0.0	0.7	0.0	21	hbl, musc, sph, zirc
750.02	very fine sand	58	5	18	12	3	0.0	0.0	0.0	0.0	0.0	0.0	2.3	0.0	0.0	0.0	2.3	0.0	22	hbl, biot, musc, sph, zirc
770.26	very fine sand(-fine sand)	55	7	14	8	7	0.0	0.0	0.0	0.0	0.0	0.3	2.3	0.3	1.3	0.7	3.3	0.3	23	hbl, musc, sph?
787.66	very fine sand	63	8	10	11	2	0.3	0.0	0.0	0.0	0.0	0.7	3.0	0.0	0.0	0.0	2.0	0.0	23	biot?, musc, celadonite?, sph, zirc, gt