Info

Fern-spore spike

Yes

Yes

Yes

No

No

Iridium anomaly

20.8 ppb

22.0 ppb

26.0 ppb

No

3.36 ppb (28)

Claystone layer

Yes

Yes

Yes

No

No

Shocked minerals

Yes

Yes

Yes

No

No

Magnetostratigraphy

No

No

No

No

Yes

Radiometric dates

No

No

No

No

Yes

K vertebrates below

Yes (27)

No

Yes

Yes

Yes

T vertebrates above

Yes (27)

No

No

Yes

No

K leaves below

No

Yes

No

No

No

T leaves above

No

Yes

No

No

No

Locality name

(66) Coal Valley

(67) Judy Creek 83-313A

(68) Judy Creek 83-368A

(69) Judy Creek 83-401A

(70) Knudsen's Farm

Latitude

53° 02' 40" N

54° 33' 39" N

54° 28' 54" N

54° 31' 22" N

51° 54' 10" N

Longitude

116° 42' 40" W

115° 26' 13" W

115° 21' 24" W

115° 26' 10" W

113° 00' 50" W

County

(Not given)

(Not given)

(Not given)

(Not given)

Kneehills

State/Province

Alberta

Alberta

Alberta

Alberta

Alberta

Country

Canada

Canada

Canada

Canada

Canada

Formation(s)

Coals pur

Scollard

Scollard

Scollard

Scollard

Basin

Alberta

Alberta

Alberta

Alberta

Alberta

Principal reference

Jerzykiewicz and

Sweet et al (1990)

Sweet and Braman

Sweet and Braman

Sweet and Braman

0 0

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