A new technique to separate conodont elements from heavier minerals

Alcheringa

Volumn 23, Issue 1, 1999, Pages 57-62

  Jeppsson, Lennart ^a   Anehus, Rikard ^a  

^a Division of Historical Geology and Palaeontology   (Sweden)

Author keywords

Conodont element density; Conodonts; Density separation; Extraction technique; Sodium polytungstate

Indexed keywords

EXTRACTION METHOD; LABORATORY METHOD; MICROPALEONTOLOGY;

EID: 0032816996     PISSN: 03115518     EISSN: 17520754     Source Type: Journal    
DOI: 10.1080/03115519908619339     Document Type: Article

References (15)

1. Aldridge, R.J., 1985. Conodonts of the Silurian System from the British Isles. In A stratigraphical index of conodonts, A.C. Higgins & R.L. Austin, eds, Ellis Horwood Ltd, Chichester, 68-92.
2. Anderson, M.A., Dargan, G., Brock, G.A., Talent, J.A. & Mawson, R., 1995. Maximising efficiency of conodont separations using sodium polytungstate solution. Courier Forschungsinstitut Senckenberg 182, 515-521.
3. Barnes, C.R., & O’Brien, F.H.C., 1987. Coffee and conodonts: cheap filtration. In Conodonts: Investigative techniques and applications, R. L. Austin ed., Ellis Horwood Ltd., Chichester, 67.
4. Callahan, J. 1987. A nontoxic heavy liquid and inexpensive filters for separation of mineral grains. Journal of Sedimentology 57, 765-766.
5. Ellison, S. 1944. The composition of conodonts. Journal of Paleontology 18,133-140.
6. Jeppsson, L., & Anehus, R., 1995. A buffered formic acid technique for conodont extraction. Journal of Paleontology 69,487-498.
7. Jeppsson, L., Fredholm, D., & Mattiasson, B., 1985. Acetic acid and phosphatic fossils - a warning. Journal of Paleontology 59,952-956.
8. Krukowski, S.T., 1988. Sodium metatungstate: A new heavy- mineral separation medium for the extraction of conodonts from insoluble residues. Journal of Paleontology 62,314-316.
9. Merrill, G.K., 1980. Removal of pyrite from microfossil samples by means of sodium hypochlorite. Journal of Paleontology 54, 633-634.
10. Merrill, G.K., 1987. Cryogenic density separation of conodonts. In Conodonts: Investigative techniques and applications, R. L. Austin, ed, Ellis Horwood Ltd., Chichester, 63-66.
11. Morrow, J.R. & Webster, G.D., 1989., A cryogenic density separation technique for conodont and heavy mineral separations. Journal of Paleontology 63,953-955.
12. Savage, N.M., 1988. The use of sodium polytungstate for conodont separations. Journal of Micropalaeontology 7,39-40.
13. Schioler, P., 1989. Non-toxic low-cost heavy liquid separation in the Geological Survey of Greenland. Report of activities 1988. Rapport Grmlands Geologiske Undersegelse 145, 11-13.
14. Stone, J., 1987. Review of investigative technique used in the study of conodonts. In Conodonts: Investigative techniques and applications, R. L. Austin, ed, Ellis Horwood Ltd., Chichester, 17-34.
15. Swift, A., 1987. Conodont concentration using diiodomethane. In Conodonts: Investigative techniques and applications, R. L. Austin, ed, Ellis Horwood Ltd., Chichester, 66.