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Home All issues Volume 193 (2022) BSGF - Earth Sci. Bull., 193 (2022) 16 Full HTML
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Table 1

Results of the petrographic and isotopic analyses of the four Delian marble quarries.

Marble quarry Area Sample MGS (mm) Grain repartition Fabric Internal grain deformation Lineations Fractures Crystal boundaries Dolomite (XRD) Quartz (Microscope, XRD) Phlogopites (Microscope, XRD) Opaques Other mineral (XRD, SEM-EDS) δ13C δ13C DEV δ18O δ18O DEV
C23 Lens core 4 0.5 HO Mosaïc No No No Interlobate 91.9% + ++ + Serp −0.15 0.29 −5.27 0.25
6 0.5 HO Mosaïc No Yes No Interlobate 87.8% ++ ++ +− Tit 0.76 0.06 −8.32 0.53
8 0.5 HO Mosaïc No No No Interlobate 84.7% + + –   −0.14 0.43 −9.08 0.23
5 4 HE Mosaïc No No No Interlobate – + ++ + Dio, Cli, Serp, Spi 2.31 0.25 −4.08 0.39
7 3.25 HE Mortar No No No Interlobate 1.5% +++ +++ +−   2.25 0.18 −4.84 0.06
9 3.75 HE Mortar No Yes Yes Polygonal – + – +−   1.67 0.14 −4.69 0.16
C23 Intensely fractured 2 0.5 HO Mosaïc No No No Interlobate 90.8% – + + Tit 0.65 0.23 −8.18 0.86
3 0.5 HO Mosaïc No No Yes Interlobate 92.2% – ++ +   1.25 0.04 −9.77 0.23
10 0.5 HO Mosaïc No No No Interlobate 88.4% + ++ +−   0.20 0.45 −6.10 0.69
1 3 HE Mortar No No Yes Amoeboid 27.7% + ++ +++ Cli, Ano 1.16 0.18 −8.17 1.39
11 2 HE Mortar No Yes Yes Amoeboid – ++ +++ ++ Dio, Aut 0.87 0.40 −9.08 0.29
C23 Strong ductile deformation 17 0.5 HE Mortar No Yes Yes Amoeboid 95.0% – + + Tit 0.00 0.22 −11.94 0.58
19 0.5 HE Mortar No No No Interlobate 97.1% – – ++   0.35 0.01 −12.30 0.12
24 0.5 HE Mortar No No No Interlobate 94.8% – + +− Tit, Cli, Ano 0.86 0.09 −11.32 0.29
12 2.5 HE Mosaïc Yes No Yes Interlobate 0.8% + – +−   −0.33 1.19 −8.99 0.39
13 2 HE Mortar Yes No Yes Interlobate – – + +−   0.43 0.14 −4.47 0.25
14 3.5 HE Mortar Yes Yes Yes Amoeboid 1.2% + + +− Dio, Talc 1.01 0.43 −18.83 1.44
15 3 HE Mortar Yes Yes Yes Amoeboid – + – +− Sch, Feld 1.14 0.14 −15.12 0.29
16 3 HE Mortar Yes Yes Yes Amoeboid – +++ +++ +− Dio, Cli 0.31 0.01 −14.79 0.17
18 3             – +++ +++     −0.52 0.46 −15.23 0.07
20 2.25             – +++ +++   Zir 1.34 0.04 −15.48 0.34
21 1.5 HE Mortar No No No Amoeboid 0.5% + ++ +− Cli −0.65 0.01 −14.92 0.06
22 0.8 HE Mosaïc Yes Yes Yes Polygonal 0.5% + ++ +++ Tit, Dio, Ano, Cli, Aut, Thor, Zir, Feld, Epid −0.58 0.16 −14.42 0.20
23 2 HE Mortar Yes Yes Yes Amoeboid – ++ + ++   2.01 0.17 −12.41 0.09
25 4 HE Mortar No Yes Yes Amoeboid – + ++ ++ Dio, Ano 2.05 0.36 −6.60 0.66
C24 Lens core 30 1             – – +     0.10 0.23 −6.41 0.18
31 2.5 HE Mortar Yes No Yes Interlobate – + – +− Dio 1.55 0.19 −6.67 0.06
32 3 HE Mortar No No Yes Amoeboid – – +++ ++ Cli 2.32 0.01 −2.40 0.05
33 3 HE Mortar No No Yes Amoeboid – + +++ ++   2.47 0.19 −1.81 0.03
34 4 HE Mosaïc No No No Interlobate – – + – Dio 1.79 0.03 −6.69 0.01
35 > 20 HE Mortar No Yes No Interlobate – – – –   1.72 0.21 −7.24 0.24
36 4 HE Mosaïc No No Yes Interlobate – – – –   0.48 0.10 −3.15 0.06
C24 Intensely fractured 28 0.5 HE Mosaïc No No No Interlobate 94.6% – + + Tit 0.76 0.21 −8.55 0.07
29 0.5 HE Mosaïc No No Yes Interlobate 89.6% – +++ +− Cli 0.74 0.22 −9.58 1.98
C24 Strong ductile deformation 26 1.5 HE Mortar Yes No Yes Interlobate – + + ++   2.06 0.16 −11.52 0.29
27 1.5 HE Mortar Yes No No Interlobate – – ++ +−   0.13 0.19 −5.01 0.20
37 3 HE Mortar No Yes Yes Amoeboid – + + +− Dio, Hum, Spi, Amp, Tour 1.79 0.00 −13.85 0.21
38 3 HE Mortar No Yes Yes Amoeboid 1.9% ++ +++ +− Cli 1.25 0.05 −13.25 0.13
39 > 20 HE Mortar Yes No Yes Interlobate       –          
40 3 HE Mortar Yes Yes Yes Interlobate – + + +− Dio, Grn 1.54 0.25 −11.87 2.93
C25 Lens core 41 > 20 HE Mortar No Yes No Interlobate – +++ +++ +++   2.68 0.04 −5.63 0.52
42 > 20 HE Mortar No Yes No Interlobate – – + –   2.73 0.01 −7.77 0.04
43 > 20 HE Mortar No Yes Yes Amoeboid – – – ++   2.77 0.02 −5.59 0.15
44 > 20 HE Mortar Yes Yes Yes Amoeboid – – – ++   2.49 0.04 −11.04 0.27
45 > 20 HE Mortar No No Yes Amoeboid – – – –   2.86 0.03 −6.45 0.20
46 2.5 HE Mortar No Yes Yes Amoeboid – – – +−   2.93 0.03 −5.63 0.04
47 > 20                       2.71 0.03 −6.30 0.05
48 > 20                       2.61 0.03 −8.45 0.08
C25 Skarn 49 > 20                       1.80 0.47 −10.90 1.82
C32 Lens core 50 1 HE Mortar No Yes No Amoeboid 87.3% – + +− Tit 1.39 0.12 −7.37 0.46
51 3.5 HE Mortar No No No Amoeboid – + ++ +− Ano 3.18 0.09 −2.63 0.08
52 5 HE Mortar No No No Amoeboid 1.2% + ++ –   1.89 0.15 −5.69 1.48
53 12 HE Mortar No No No Amoeboid – + + +++   2.52 0.04 −2.96 0.04

HE: heteroblastic; HO: homeoblastic; +++: very abundant; ++: abundant; +: present; + −: traces; −: absence; Amp: amphibole; Ano: anorthite; Aut: autunite (uranium secondary mineral); Cli: clinochlore; Dio: diopside; Epid: epidote (Ce–La–allanite); Feld: feldspath; Grn: garnet (calcic garnet: andradite–grossular); Hum: humite; Sch: scheelite (CaWO4); Serp: greenalite (serpentine group mineral); Spi: spinel; Talc: talc; Thor: thorite (thorium analogue of zircon); Tit: titanite; Tour: tourmaline; Zir: zircon. DEV is the standard deviation of δ18O and δ13C measurements.

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