Tikhomirov, P. L. et al. (2016) Trace element and isotopic geochemistry of Cretaceous magmatism in NE Asia: Spatial zonation, temporal evolution, and tectonic controls, Lithos, 264, 453-471, doi: 10.1016/j.lithos.2016.08.009. < 20181022153433-002758 > pub

Map on Earth or stone. Places and analyses are shown.

  • abstract:

    Results of a comprehensive geochemical study (major and trace elements, and isotopes of Sr, Nd, Pb, Hf) of Cretaceous volcanic rocks from the Chukotka area in northeastern Russia are presented. Synthesis of available geological and geochronological data suggests diachronous onset of activity of the Okhotsk-Chukotka volcanic belt (OCVB), the largest magmatic province in the region. The OCVB consists of ca. 106 km3 of volcanic rocks. At 106-105 Ma, subduction-related magmatism initiated in the southern and central segments of the OCVB. In the Central and Northern Chukotka areas, where the northern OCVB is exposed, onset of arc magmatism occurred ca. 10 m.y. after extension-related magmatism of the Chaun igneous province at 109-104 Ma. Mafic rocks from the OCVB yield (87Sr/86Sr)80 Ma of 0.7033 to 0.7047, εNd80 Ma of 0.0 to 7.10, εHf80 Ma of 4.12 to 12.88, (206Pb/204Pb)80 Ma of 18.11 to 18.42, and (208Pb/204Pb)80 Ma of 37.96 to 38.21. Volcanic rocks from the Chaun province, as well as OCVB rocks from Northern Chukotka, originate from a relatively enriched source and have (87Sr/86Sr)80 Ma of 0.7088 to 0.7100, εNd80 Ma of - 5.81 to - 3.42, εHf80 Ma of - 3.40 to - 0.25, (206Pb/204Pb)80 Ma of 18.69 to 18.90, and (208Pb/204Pb)80 Ma of 38.65 to 38.86. No definitive across-arc elemental or isotopic zonation of the OCVB has been revealed, probably because of wide-scale crustal melting and subsequent contamination of mantle-derived melts. However, there is a clear along-arc isotopic zonation. In our interpretation, this results from heterogeneity of the subcontinental lithospheric mantle, which likely was a major contributor to the magma source. The similar isotopic signatures of silicic (dominantly crust-derived) and mafic (mantle-derived) volcanic rocks in each OCVB segment imply that remelting of juvenile mafic underplated material was the main process responsible for the crust-derived magma generation. These data from the major Cretaceous magmatic provinces of northeast Asia are synthesized in context of existing plate tectonic reconstructions.

  • summary:

    1. The initiation of the OCVB activity was diachronous, probably resulting from variations in the arc-normal component of relative plate motion along the strike of the continental margin. At ca. 106–105 Ma, the formation of the larger, NE-trending (in present-day coordinates) part of the volcanic belt began with the eruptions of dominantly mafic and intermediate calc-alkaline magmas. Typically, mantle protolith of these magmas was characterized by depleted (DM-like) isotopic composition, although there is also evidence for contribution from relatively enriched sources. During the same time period, the extensional (or perhaps transtensional) tectonic regime caused generation and emplacement of strongly enriched shoshonitic magmas within the former Arctic Alaska–Chukotka block that formed shallow-level plutons and related minor volcanic units of the Chaun igneous province.
    2. After the re-arrangement of plate kinematics in the North Pacific at ca. 95 Ma, the formation of the northern, SE-trending part of the OCVB began. The activity of the entire OCVB was accompanied by extremely intense thermal reworking and melting of the continental crust, with the production of significant volumes of silicic magmas. The strong crustal contamination of mantle-derived melts disguised the geochemical cross-arc zonation typical of many other subduction-related volcanic belts.
    3. The Okhotsk–Chukotka belt has a clear along-arc isotopic zonation, which likely results from different compositions of the subcontinental lithospheric mantle under several continental blocks that were assembled together shortly before the onset of OCVB activity. Commonly, the isotopic ratios of silicic (crust-derived) and mafic (mantle-derived) volcanic rocks are similar within a single OCVB segment, suggesting that remelting of juvenile mafic underplated material was the major process responsible for the crustal magma generation.
    4. The ‘upper basalts’ of the OCVB formed during decreasing heat flow, after the crystallization of large crustal magma chambers. The youngest mafic rocks of the OCVB are slightly enriched relative to other mafic rocks of the volcanic belt, possibly because of the addition of melts from relatively deep sources. However, the available data suggest that the ‘upper basalts’ represent the natural final stage of the OCVB activity, rather than the product of a postulated superposed rifting event.

  • doi: 10.1016/j.lithos.2016.08.009
  • modified at 11 h ago


(a) XRF procedures of Takei (2002) on XRF PANalytical PW2400
(b) Q-ICP-MS_procedures of Makishima and Nakamura (1997, 1999, 2006) on Q-ICPMS Agilent 7500cs
(c) Q-ICP-MS_procedures of Lu et al. (2007) on Q-ICPMS Agilent 7500cs
(d) Pb isotopes_procedures of Kuritani and Nakamura (2002, 2003) on TIMS Finnigan MAT261, MAT262 and Triton TI
(e) Sr isotopes_procedures of Yoshikawa and Nakamura (1993) on TIMS Finnigan MAT261, MAT262 and Triton TI
(f) Nd isotopes_procedures of Nakamura et al. (1991, 2003) on TIMS Finnigan MAT261, MAT262 and Triton TI
(g) Hf isotopes_procedures of Lu et al. (2007) on MC-ICP-MS Finnigan, Neptune
Tixhr 1457610719 thumb 03-134 < 20181018111320-586056 >pub
  • IGSN: IEDRM00HD
  • classification: volcanic:andesitic
  • physical-form: hand specimen
  • quantity (kg): 0.32
  • description: NE Russia, Chukotka peninsula, Salamikha suite
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Tixhr 1392844197 thumb 03-137 < 20181018111546-566768 >pub
  • IGSN: IEDRM00HE
  • classification: volcanic:andesitic
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  • description: NE Russia, Chukotka peninsula, Salamikha suite
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Tixhr1398252452 thumb 70.5/5065 < 20181018104734-850036 >pub
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  • description: NE Russia, Chukotka peninsula, Vapanay suite
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Tixhr1914777745 thumb 1273-1/465 < 20181018105443-325211 >pub
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  • classification: volcanic:basaltic
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  • description: NE Russia, Chukotka peninsula, Enmyvaam suite
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Tixhr1670024882 thumb 2557-9/460 < 20181018103441-101511 >pub
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  • description: NE Russia, Chukotka peninsula, Etchikun suite
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Tixhr1318876405 thumb 74.5/4825 < 20181018104920-387892 >pub
  • IGSN: IEDRM00HN
  • classification: volcanic:dacitic
  • physical-form: hand specimen
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  • description: NE Russia, Chukotka peninsula, Vapanay suite
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Tixhr 1602096019 thumb 195a < 20181018105907-457698 >pub
  • IGSN: IEDRM00HR
  • classification: igneous
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  • quantity (kg): 0.14
  • description: NE Russia, Chukotka peninsula, CCS dike
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Tixhr1410431112 thumb PT-04-596/1 < 20181017112240-329668 >pub
  • IGSN: IEDRM00HG
  • classification: volcanic:andesitic
  • physical-form: hand specimen
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  • description: NE Russia, Chukotka peninsula, Vilkovskaya suite
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Tixhr1353107776 thumb PT-04-398 < 20181017111053-893180 >pub
  • IGSN: IEDRM00HJ
  • classification: volcanic:basaltic
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  • quantity (kg): 0.095
  • description: NE Russia, Chukotka peninsula, Kovalenko suite
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Tixhr 2065574116 thumb 176-8/460 < 20181016114304-777574 >pub
  • IGSN: IEDRM00HB
  • classification: volcanic:basaltic
  • physical-form: hand specimen
  • quantity (kg): 0.085
  • description: NE Russia, Chukotka peninsula, Etchikun suite
  • modified at 2018-10-23
Tixhr 1444549547 thumb PT-04-594 < 20181017112000-318244 >pub
  • IGSN: IEDRM00HF
  • classification: volcanic:andesitic
  • physical-form: hand specimen
  • quantity (kg): 0.2
  • description: NE Russia, Chukotka peninsula, Vilkovskaya suite
  • modified at 2018-10-23
Tixhr 2091390398 thumb PT-04-566 < 20181017111453-162754 >pub
  • IGSN: IEDRM00HH
  • classification: volcanic:basaltic
  • physical-form: coarse chips
  • quantity (kg): 0.085
  • description: NE Russia, Chukotka peninsula, Lower Eropol suite
  • modified at 2018-11-08
Tixhr2043846406 thumb PT-04-617 < 20181017112631-344679 >pub
  • IGSN: IEDRM00HI
  • classification: volcanic:andesitic
  • physical-form: hand specimen
  • quantity (kg): 0.19
  • description: NE Russia, Chukotka peninsula, Lower Eropol suite
  • modified at 2018-10-23
Tixhr 809078777 thumb PT-04-452 < 20181017111239-006984 >pub
  • IGSN: IEDRM00HK
  • classification: volcanic:andesitic
  • physical-form: hand specimen
  • quantity (kg): 0.185
  • description: NE Russia, Chukotka peninsula, Kovalenko suite
  • modified at 2018-10-23
Tixhr 1119663758 thumb T05-55 < 20181015094648-631547 >pub
  • IGSN: IEDRM00HL
  • classification: volcanic:basaltic
  • physical-form: hand specimen
  • quantity (kg): 0.185
  • description: NE Russia, Chukotka peninsula; Koekvun suite, Upper Cretaceous basalt
  • modified at 2018-10-23
Tixhr 295682293 thumb T05-57 < 20181015094818-888341 >pub
  • IGSN: IEDRM00HM
  • classification: volcanic:andesitic
  • physical-form: hand specimen
  • quantity (kg): 0.185
  • description: NE Russia, Chukotka peninsula; Koekvun suite, Upper Cretaceous andesite
  • modified at 2018-10-23
Tixhr2147356035 thumb T05-92-3 < 20181016092748-584496 >pub
  • IGSN: IEDRM00HQ
  • classification: volcanic:basaltic
  • physical-form: hand specimen
  • quantity (kg): 0.195
  • description: NE Russia, Chukotka peninsula, Enmyvaam suite
  • modified at 2018-10-23
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binder of Trace element and isotopic geochemistry of Cretaceous magmatism in NE Asia: Spatial zonation, temporal evolution, and tectonic controls by Tikhomirov et al., 2016 pub container 20181030153708-021023
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03-134 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143626-667182
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03-134 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-181557
03-137 pub XRF PANalytical PW2400 12 20181031114034-918251
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03-137 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143626-942291
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PT-04-596/1 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-174295
PT-04-596/1 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-773151
PT-04-596/1 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-268273
PT-04-398 pub XRF PANalytical PW2400 12 20181031114035-983209
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PT-04-398 pub Q-ICPMS Agilent 7500cs 4 20181031121109-127174
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PT-04-398 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-709704
PT-04-398 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-422367
PT-04-398 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-706493
T05-55 pub XRF PANalytical PW2400 12 20181031114036-029082
T05-55 pub Q-ICPMS Agilent 7500cs 24 20181031120413-311690
T05-55 pub Q-ICPMS Agilent 7500cs 4 20181031121109-417550
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T05-55 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-373180
T05-55 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-469921
T05-55 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-008037
70.5/5065 pub XRF PANalytical PW2400 12 20181031114036-254169
70.5/5065 pub Q-ICPMS Agilent 7500cs 24 20181031120415-957641
70.5/5065 pub Q-ICPMS Agilent 7500cs 4 20181031121110-315518
70.5/5065 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151252-981558
70.5/5065 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-054710
70.5/5065 pub MC-ICP-MS Finnigan, Neptune 4 20181108144653-049564
70.5/5065 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-813520
176-8/460 pub XRF PANalytical PW2400 12 20181031114033-181836
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176-8/460 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151250-551156
176-8/460 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143626-101493
176-8/460 pub MC-ICP-MS Finnigan, Neptune 4 20181108144651-306216
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PT-04-594 pub Q-ICPMS Agilent 7500cs 24 20181031115542-564476
PT-04-594 pub Q-ICPMS Agilent 7500cs 4 20181031121109-090464
PT-04-594 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151250-504884
PT-04-594 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143626-643561
PT-04-594 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-471395
PT-04-594 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-695964
PT-04-566 pub XRF PANalytical PW2400 12 20181031114035-199818
PT-04-566 pub Q-ICPMS Agilent 7500cs 24 20181031115542-194491
PT-04-566 pub Q-ICPMS Agilent 7500cs 4 20181031121109-999477
PT-04-566 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151251-305651
PT-04-566 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-539557
PT-04-566 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-490261
PT-04-566 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-357398
1273-1/465 pub XRF PANalytical PW2400 12 20181031114037-012027
1273-1/465 pub Q-ICPMS Agilent 7500cs 24 20181031120416-733005
1273-1/465 pub Q-ICPMS Agilent 7500cs 4 20181031121110-218304
1273-1/465 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151252-228271
1273-1/465 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-243814
1273-1/465 pub MC-ICP-MS Finnigan, Neptune 4 20181108144653-735628
1273-1/465 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144204-967878
2557-9/460 pub XRF PANalytical PW2400 12 20181031114034-931527
2557-9/460 pub Q-ICPMS Agilent 7500cs 24 20181031115540-003605
2557-9/460 pub Q-ICPMS Agilent 7500cs 4 20181031121109-928316
2557-9/460 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151250-458302
2557-9/460 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143626-738624
2557-9/460 pub MC-ICP-MS Finnigan, Neptune 4 20181108144651-170705
2557-9/460 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144202-877685
PT-04-617 pub XRF PANalytical PW2400 12 20181031114035-031494
PT-04-617 pub Q-ICPMS Agilent 7500cs 24 20181031115543-844279
PT-04-617 pub Q-ICPMS Agilent 7500cs 4 20181031121109-209842
PT-04-617 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151251-365050
PT-04-617 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-183702
PT-04-617 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-537156
PT-04-617 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-677779
PT-04-452 pub XRF PANalytical PW2400 12 20181031114035-518195
PT-04-452 pub Q-ICPMS Agilent 7500cs 24 20181031120413-416854
PT-04-452 pub Q-ICPMS Agilent 7500cs 4 20181031121109-899763
PT-04-452 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151251-544814
PT-04-452 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-898490
PT-04-452 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-414606
PT-04-452 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-062804
74.5/4825 pub XRF PANalytical PW2400 12 20181031114036-334304
74.5/4825 pub Q-ICPMS Agilent 7500cs 24 20181031120414-082322
74.5/4825 pub Q-ICPMS Agilent 7500cs 4 20181031121110-597240
74.5/4825 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151252-297013
74.5/4825 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-519476
74.5/4825 pub MC-ICP-MS Finnigan, Neptune 4 20181108144653-517175
74.5/4825 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-096368
T05-92-3 pub XRF PANalytical PW2400 12 20181031114037-848715
T05-92-3 pub Q-ICPMS Agilent 7500cs 24 20181031120416-397275
T05-92-3 pub Q-ICPMS Agilent 7500cs 4 20181031121110-404372
T05-92-3 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151252-115541
T05-92-3 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-833384
T05-92-3 pub MC-ICP-MS Finnigan, Neptune 4 20181108144653-047804
T05-92-3 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144204-285178
195a pub XRF PANalytical PW2400 12 20181031114037-901690
195a pub Q-ICPMS Agilent 7500cs 24 20181031120417-066508
195a pub Q-ICPMS Agilent 7500cs 4 20181031121110-922115
195a pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151253-915638
195a pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-333010
195a pub MC-ICP-MS Finnigan, Neptune 4 20181108144653-135545
195a pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144204-626053
T05-57 pub XRF PANalytical PW2400 12 20181031114036-665142
T05-57 pub Q-ICPMS Agilent 7500cs 24 20181031120414-332157
T05-57 pub Q-ICPMS Agilent 7500cs 4 20181031121109-731997
T05-57 pub TIMS Finnigan MAT261, MAT262 and Triton TI 9 20181031151252-958268
T05-57 pub TIMS Finnigan MAT261, MAT262 and Triton TI 3 20181108143627-911951
T05-57 pub MC-ICP-MS Finnigan, Neptune 4 20181108144652-557468
T05-57 pub TIMS Finnigan MAT261, MAT262 and Triton TI 4 20181108144203-395567
name spots global-id
caption ID assembly stone
Table 1. Whole rock major elements (%), trace elements (ppm), and isotope compositions of Cretaceous volcanic rocks from Chukotka area pub 20181031114341-926431 major-trace-isotope (Tikhomirov et al., 2016) 17
manual
  • name
  • Tikhomirov, P. L.
  • Kalinina, E. A.
  • Moriguti, Takuya
  • Makishima, Akio
  • Kobayashi, Katsura
  • Nakamura, E.