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Gardens Granodiorite STRATNO: 7005
Current: Yes Rank: Formation, beds Status: Formal State(s): TAS
Category: Variation of published name Usage: Briefly described Definition Card: No
Originator: Entry date: 01-JAN-88Last Update: 24-FEB-17
Replaced by: Previously known as: Gardens granodiorite
Description: I-type biotite-hornblende granodiorite - consists of euhedral to anhedral amphibole and biotite, plagioclase and intergranular K-feldspar and quartz.
Comments: See also the informal Gardens Granite. Age and suite derived from the 2005 1:500,000 Tasmanian Granites Map and dataset.
Geological province: Lachlan Orogen
Type state: Reference section type:
Maximum thickness: mMinimum thickness:
Unit Age Event: intrusion
Top of unit -
Minimum age: Middle Devonian Ma: 385 % from base of biozone: Age method: isotopic, Rb/Sr
Maximum age: Ma: % from base of biozone: Age method:
Base of unit -
Minimum age: Ma: % from base of biozone: Age method:
Maximum age: Early Devonian Ma: 399.9 ± 1.5 % from base of biozone: Age method: isotopic, U/Pb-Pb/Pb ion probe

Stratigraphic Hierarchy (current units only) Rank Status

Chemical Hierarchy (current units only) Rank Status


Related units: Relationship: Contact Type:
First Reference:
REFID: 37797 Cocker, J.D., 1982, Rb-Sr geochronology and Sr isotopic composition of Devonian granitoids, eastern Tasmania., Geological Society of Australia. Journal, 29(2), p139-158

Use on maps:


Full Bibliographic Details (ordered by usage, publication year)

REFID: 69876 Seymour, D.B. , McClenaghan, M.P. , Green, G.R. , Everard, J.L. , Berry, R.F. , Callaghan, T. , Davidson, G.J. , Hills, P.B. 2014 Mid-Palaeozoic orogenesis, magmatism and mineralisation. In: Corbett, K.D., Quilty, P.G. & Calver, C.R. editors, Geological Evolution of Tasmania. Geological Society of Australia Special Publication 24 pp.273-362
Usage: Briefly described (p281-282, p301, p304, p306 Tb 6.1, p308) Min age from reference: Middle Devonian Max age from reference: Early Devonian Comments: See also p311, p314. Blue Tier Batholith. Geochemistry. , ~385-382 Ma (Rb-Sr); 401.5-398.5 Ma (U-Pb SHRIMP) , Gardens Suite , I-type granodiorite. Early, foliated, biotite-hornblende granodiorite pluton.
REFID: 66575 Black, L.P. , Everard, J.L. , McClenaghan, M.P. , Korsch, R.J. , Calver, C.R. , Fioretti, A.M. , Brown, A.V. , Foudoulis, C. 2010 Controls on Devonian-Carboniferous magmatism in Tasmania, based on inherited zircon age patterns, Sr, Nd and Pb isotopes, and major and trace element geochemistry Australian Journal of Earth Sciences 57(7) 933-968
Usage: Briefly described (p936 Fig2, p942 Fig5, p964 Fig.20.) Min age from reference: Emsian Max age from reference: Emsian Comments: Blue Tier Batholith. I-Type; mafic, unfractionated; U-Pb SHRIMP age of 400 +/- 2 Ma. Inherited zircons discussed; isotopic data detailed p951 Tb.2.
REFID: 61216 Tasmanian Geological Survey 2005 Devonian granites and associated mineralisation in northeast and northwest Tasmania: excursion guide - May 2005 Geological Survey of Tasmania. Records 2005/03 72p
Usage: Briefly described (p43) Comments: See also Gardens Granite. Consists of euhedral to anhedral amphibole and biotite, plagioclase and intergranular K-feldspar and quartz. Additional mineralogical details included.
REFID: 61723 Black, L.P. , McClenaghan, M.P. , Korsch, R.J. , Everard, J.L. , Foudoulis, C. 2005 Significance of Devonian-Carboniferous igneous activity in Tasmania as derived from U-Pb SHRIMP dating of zircon Australian Journal of Earth Sciences 52 (6) 807-829
Usage: Briefly described (p811, p810 Tb. 1) Min age from reference: Devonian Max age from reference: Devonian Comments: A large body of foliated I-type hornblende-biotite granodiorite. Age: 399.9+/-1.5Ma. Of the Blue Tier Batholith.
REFID: 44105 Burrett, C.F. , Martin, E.L. 1989 Geology and Mineral Resources of Tasmania. Geological Society of Australia. Special Publication 15 574pp
Usage: Briefly described (p256) Comments: Of the Gardens Suite (Blue Tier Batholith).
REFID: 41818 Baillie, P.W. 1986 Eddystone, Tasmania, geological atlas 1:50 000 series. Sheet 25(8516S). Geological Survey of Tasmania. Explanatory Report 1v 40p
Usage: Mentioned (p33) Comments:
REFID: 37797 Cocker, J.D. 1982 Rb-Sr geochronology and Sr isotopic composition of Devonian granitoids, eastern Tasmania. Geological Society of Australia. Journal 29(2) p139-158
Usage: Mentioned (Fig.1) Comments:

Bibliographic references returned: 7 This data is subject to Geoscience Australia's disclaimer and copyright statements.