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Table 1 ICP-MS and 87Sr/86Sr results for rhynchonellids from the western Swiss Jura

From: Reconciling strontium-isotope and K–Ar ages with biostratigraphy: the case of the Urgonian platform, Early Cretaceous of the Jura Mountains, Western Switzerland

Sample

Species

Section

Formation

Mn (ppm)

Mg (ppm)

Sr (ppm)

Mn/Mg

Sr/Mg

Sr/Ca × 1,000

87Sr/86Sr

mean

C+160b

Plicarastrum hauteriviense (BURRI)

Cressier

MBH

257.59

1,090.44

682.28

0.24

0.63

2.71

0.707410

0.000010

C+100

Plicarastrum hauteriviense (BURRI)

Cressier

MBH

56.19

475.26

318.69

0.12

0.67

1.75

0.707423

0.000012

C-120

Plicarastrum hauteriviense (BURRI)

Cressier

MBH

28.29

1,102.78

668.05

0.03

0.61

2.19

0.707431

0.000010

C-40a

Plicarastrum hauteriviense (BURRI)

Cressier

MBH

10.55

621.34

594.81

0.02

0.96

2.17

0.707434

0.000011

C(0;-30)

Plicarastrum hauteriviense (BURRI)

Cressier

MBH

19.40

989.10

627.46

0.02

0.63

2.31

0.707413

0.000010

C-40b

Plicarastrum hauteriviense (BURRI)

Cressier

MBH

14.56

806.81

588.02

0.02

0.73

2.26

0.707417

0.000010

MC1a

Indet.

Mont Chamblon

MU

67.03

973.27

453.44

0.07

0.47

1.90

0.707507

0.000012

MC1c

Indet.

Mont Chamblon

MU

190.35

1,026.24

313.31

0.19

0.31

1.35

0.707541

0.000010

MC3a

Indet.

Mont Chamblon

MU

60.56

988.17

515.92

0.06

0.52

1.96

0.707464

0.000010

MC4

Indet.

Mont Chamblon

MU

51.81

2,017.57

520.66

0.03

0.26

2.15

0.707448

0.000012

ECb10

Indet.

Eclépens

UJ

37.90

3,401.37

643.97

0.01

0.19

2.36

0.707461

0.000010

F2aa

Lamellaerhynchia gillieroni (PICTET) var.longirostris

Pourtalés Hospital

UJ

      

0.707437

0.000026

F2b

Lamellaerhynchia gillieroni (PICTET) var.longirostris

Pourtalés Hospital

UJ

69.79

634.43

547.88

0.11

0.86

1.92

0.707477

0.000015

LRu4

Lamellaerhynchia gillieroni (PICTET) var.longirostris

La Russille

MR

25.08

1,161.03

776.56

0.02

0.67

2.14

0.707468

0.000018

LRu12a

Lamellaerhynchia gillieroni (PICTET) var.longirostris

La Russille

MR

44.76

1,039.04

454.91

0.04

0.44

1.68

0.707513

0.000036

LRu12ba

Indet.

La Russille

MR

      

0.707443

0.000024

E125Br

Indet.

Eclépens

UB

46.61

3,147.79

437.33

0.01

0.14

1.79

0.707509

0.000013

E120Br

Indet.

Eclépens

UB

59.05

1,142.33

475.00

0.05

0.42

2.00

0.707490

0.000012

VA61

Indet.

Vaumarcus

UB

28.87

1,954.73

167.31

0.01

0.09

0.88

0.707540

0.000010

  1. The rows in italic indicated diagenetically altered brachiopods
  2. aNo ICP-MS analyses due to the tiny size of the brachiopod and the subsequent small amount of power