Pineda-Velasco et al. (2015) Comment on Diverse magmatic effects of subducting a hot slab in SW Japan: Results from forward modeling by J.-I. Kimura et al., Geochemistry, Geophysics, Geosystems, 16, 2848-2852, doi:10.1002/2015GC005914. < 20150910180659-209646 > pub

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

  • abstract:

    The recently published paper by Kimura et al. [2014] reports geochemical and isotopic analyses of Quaternary adakitic dacites (ADK) from two volcanic groups, Daisen and Aonoyama, in southwest (SW) Japan. Based on Pb isotope compositions, these authors suggest that crustal assimilation played a major role in the genesis of ADK. This conclusion differs from that of an earlier study by Feineman et al. [2013], who advocated only a minimal crustal effect and concluded that the Pb isotope array for Daisen ADK can be attributed to partial melting of the subducting slab with a significant amount of sediment. The Pb isotope trends for Daisen ADK presented in these two studies are clearly different and Kimura et al. [2014] did not directly compare the date sets or provide any explanation for the differences. In this comment, we critically examine the differences between the Pb isotope date sets presented by Feineman et al. [2013] and Kimura et al. [2014]. We present new date for Aonoyama ADK and we provide an explanation for the discrepancy between the date obtained in our lab and in this other recently published study.

    Kimura, J.-l., et al. (2014) Diverse magmatic effects of subducting a hot slab in SW Japan: Results from forward modeling, Geochem. Geophys. Geosyst., 15,691-739, doi:10.1002/2013GC005132.

    Feineman, M., T. Moriguti, T. Yokoyama, S. Terui, and E. Nakamura (2013), Sediment-enriched adakitic magmas from the Daisen volcanic field, Southwest Japan, Geochem. Geophys. Geosyst., 14, 3009-3031, doi:10.1002/ggge.20176.

  • doi: 10.1002/2015GC005914
  • modified at 2021-06-02
1: AON-03 2: AON-04 3: AON-05 4: AON-06 5: AON-07 6: AON-08 7: AON-09 8: AON-10 9: AON-11 10: AON-12 11: AON-13 12: AON-14 13: AON-16 14: AON-17 15: AON-18 16: AON-20 17: AON-21 18: AON-22


(a) XRF (0) on XRF PANalytical PW2400
(b) TIMS on TIMS Thermo-Fisher Triton
Img 5940 thumb AON-03 < 20141030155353-882010 >pub
  • IGSN: IEDRM008F
  • place: N34°29′36.5″, E131°48′52.0″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 3.395
  • description: Aonoyama
  • modified at 2020-09-14
Img 5941 thumb AON-04 < 20141030160328-435463 >pub
  • IGSN: IEDRM008G
  • place: N34°28′21.2″, E131°48′1.5″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 3.195
  • description: Aonoyama
  • modified at 2020-09-14
Img 5942 thumb AON-05 < 20141030161233-002788 >pub
  • IGSN: IEDRM008H
  • place: N34°28′19.6″, E131°47′46.3″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 2.435
  • description: Aonoyama
  • modified at 2020-09-14
Img 5943 thumb AON-06 < 20141030162330-900080 >pub
  • IGSN: IEDRM008I
  • place: N34°28′2.1″, E131°47′10.2″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 3.47
  • description: Aonoyama
  • modified at 2020-09-14
Img 5945 thumb AON-07 < 20141030163112-532986 >pub
  • IGSN: IEDRM008J
  • place: N34°27′50.7″, E131°46′58.3″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 3.395
  • description: Aonoyama
  • modified at 2020-09-14
Img 5946 thumb AON-08 < 20141030163748-986788 >pub
  • IGSN: IEDRM008K
  • place: N34°26′27.3″, E131°45′55.2″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 2.265
  • description: Aonoyama
  • modified at 2020-09-14
Img 5947 thumb AON-09 < 20141030164357-463173 >pub
  • IGSN: IEDRM008L
  • place: N34°26′51.6″, E131°45′54.8″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 2.4
  • description: Aonoyama
  • modified at 2020-09-14
Img 5948 thumb AON-10 < 20141104105512-358968 >pub
  • IGSN: IEDRM008M
  • place: N34°26′31.3″, E131°45′50.8″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 1.735
  • description: Aonoyama
  • modified at 2020-09-14
Img 5949 thumb AON-11 < 20141104110157-593852 >pub
  • IGSN: IEDRM008N
  • place: N34°26′52.2″, E131°45′43.2″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 4.17
  • description: Aonoyama
  • modified at 2020-09-14
Img 5951 thumb AON-12 < 20141104111000-094307 >pub
  • IGSN: IEDRM008O
  • place: N34°26′53.6″, E131°45′30.0″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 5.085
  • description: Aonoyama
  • modified at 2020-09-14
Img 5952 thumb AON-13 < 20141104111549-303800 >pub
  • IGSN: IEDRM008P
  • place: N34°26′39.9″, E131°44′37.2″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 2.345
  • description: Aonoyama
  • modified at 2020-09-14
Tixhr 77561035 thumb AON-14 < 20150129084713-732117 >pub
  • IGSN: IEDRM008Q
  • place: N34°22′42.3″, E131°52′9.9″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 4.8
  • description: Aonoyama
  • modified at 2020-07-16
Tixhr1447333845 thumb AON-21 < 20141120084426-799947 >pub
  • IGSN: IEDRM008V
  • place: N34°15′14.4″, E131°46′27.3″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 3.07
  • description: Aonoyama
  • modified at 2020-09-14
Aon 18 thumb AON-18 < 20150127090206-309107 >pub
  • IGSN: IEDRM008T
  • place: N34°5′51.2″, E131°45′40.6″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 2.335
  • description: Aonoyama
  • modified at 2020-09-14
Aon 20 thumb AON-20 < 20150127090257-410524 >pub
  • IGSN: IEDRM008U
  • place: N34°11′13.1″, E131°49′58.9″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 2.61
  • description: Aonoyama
  • modified at 2020-09-14
Tixhr179107390 thumb AON-16 < 20141120084812-310798 >pub
  • IGSN: IEDRM008R
  • place: N34°16′50.2″, E131°47′10.2″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 6.515
  • description: Aonoyama
  • modified at 2020-09-14
Aon 17 thumb AON-17 < 20150127090136-954605 >pub
  • IGSN: IEDRM008S
  • place: N34°4′33.7″, E131°45′4.1″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 4.505
  • description: Aonoyama
  • modified at 2020-09-14
Aon 22 thumb AON-22 < 20150128090250-634321 >pub
  • IGSN: IEDRM008W
  • place: N34°11′16.2″, E131°45′49.2″ more
  • classification: volcanic:dacitic
  • physical-form: hand specimen
  • quantity (kg): 3.855
  • description: Aonoyama
  • modified at 2020-09-14
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name spots global-id
caption ID rowname stone
Table2. Comparison of Pb isotope composition and major-element abundances (on a water-free basis) of Aonoyama ADK obtained in this study and by Kimura et al. (2014) pub 20180528091841-005767 major-lead-isotope (Ivan et al. 2015) 18
manual
  • name
  • Pineda-Velasco, I.
  • Nguyen, Tai Truong
  • Kitagawa, Hiroshi
  • Nakamura, Eizo