H. Richard Naslund

Professor of Geology
Igneous Petrologist

Selected Publications Concerning Igneous Layering and Layered Intrusions:

ARTICLES:

Naslund, H.R., 1977. Mineralogical variations in the upper part of the Skaergaard intrusion, East Greenland. Carnegie Inst. Wash. Yearbook 76, 640-644.

Naslund, H.R., 1984. The petrology of the Upper Border Series of the Skaergaard intrusion. Jour. Petrol. 25, 1-28.

Naslund, H.R., 1984. Supersaturation and crystal growth in the roof-zone of the Skaergaard magma chamber. Contr. Mineral. Petrol. 86, 89-93.

Naslund, H.R., 1986, Disequilibrium partial melting and rheomorphic layer formation in the contact aureole of the Basistoppen sill. Contr. Mineral. Petrol. 93, 359-367.

Conrad, M.E., and Naslund, H.R., 1989, Modally-Graded Rhythmic layering in the Skaergaard intrusion., J. Petrol. 30, 251-269.

McBirney, A.R., and Naslund, H.R., 1990, The differentiation of the Skaergaard intrusion, a discussion of Hunter and Sparks (Contrib Mineral Petrol 95:451-461), Contr. Mineral. Petrol. 104, 235-240.

Naslund, H.R., Turner, P.A., and Keith, D.W., 1991, Crystallization and Layer Formation in the Middle Zone of the Skaergaard intrusion, Bull. Geol. Soc. Denmark 38, 165-171.

Naslund, H.R., and McBirney A.R., 1996. Mechanisms of formation of igneous layering. In Cawthorn, R.G. (Ed.), Layered Intrusions, Elsevier, pp 1-43.

Naslund, H.R., 1998. Palisades Sill, New York and New Jersey, Field Trip Guide for the 70th Annual Meeting of the New York State Geological Association, H.R. Naslund (Ed.), New York State Geological Association, Albany, NY, 70-96.

Jang, Y.D., and Naslund, H.R., 2001. Major and trace element composition of Skaergaard plagioclase; geochemical evidence for changes in magma dynamics during the final stage of crystallization of the Skaergaard intrusion. Contrib. Mineral. Petrol. 140, 441-457.

Jang, Y. D., Naslund, H.R., and McBirney, A.R., 2001. The differentiation trend of the Skaergaard intrusion and the timing of magnetite crystallization: iron enrichment revisited. Earth and Planetary Science Letters 189: 189-196.

Maeda, J., Naslund, H.R., Jang, Y.D., Kikawa, E., Tajima, T., and Blackburn, W.H., 2002. High-temperature fluid migration within oceanic Layer 3 gabbros, Hole 735B, Southwest Indian Ridge: implications for the magmatic-hydrothermal transition at slow-spreading mid-ocean ridges. In Natland, J.H., Dick, H.J.B., Miller, D.J., and Von Herzen, R.P. (Eds.), Proc. ODP, Sci. Results, 176, College Station, TX (Ocean Drilling Program), 56 p. [Online at: http://www-odp.tamu.edu/publications/176_SR/chap_04/chap_04.htm]

ABSTRACTS:

Naslund, H.R., 1983. Skeletal ilmenite, magnetite, and apatite crystals in the Upper Border Series of the Skaergaard intrusion. Geol. Soc. Amer. Abst. with Prog. 15, 650.

Naslund, H.R., 1984. Evidence for disequilibrium partial melting of Skaergaard ferrogabbro at the contact of the Basistoppen sill. EOS Trans. Amer. Geophys. Union 65, 294.

Naslund, H.R., 1984. Mineralogical and compositional trends in the Basistoppen sill, East Greenland. Geol. Soc. Amer. Abst. with Prog. 16, 608.

Conrad, M.E. and Naslund, H.R., 1984. Modal, grainsize, and compositional variation in modally-graded rhythmic layers of the Skaergaard intrusion, East Greenland. Geol. Soc. Amer. Abst. with Prog. 16, 476.

Turner, P.A., Naslund, H.R., and Keith, D.W., 1986, Observations on rhythmic layering in the middle zone of the Skaergaard intrusion, East Greenland, Geol.Soc. Amer. Abst. with Prog. 18, 777.

Keith, D.W., and Naslund, H.R., 1987, Petrographic and chemical characteristics of a layered sequence in the Upper Border Zone of the Skaergaard intrusion, East Greenland, Geol. Soc. Amer. Abst. with Prog. 19, 723.

Naslund, H.R., 1988, In-situ formation of igneous lamination in the Skaergaard intrusion, Geol. Soc. Amer. Abst. with Prog. 20, A156-A157.

Naslund, H.R., Hristov, L.G., and Gorring, M.L., 1992, Cm-scale modal layering in the Palisades sill, NY-NJ, USA, Geol. Soc. Amer. Abst. with Prog. 24, A86.

Naslund, H.R., and Jang, Y.D., 1993, Formation of igneous layering in the Skaergaard intrusion, East Greenland. Abstracts, Symposium on Layering in Igneous Complexes, Witwatersrand University, Johannesburg, SA, 76-77.

Jang, Y.D., and Naslund, H.R., 1994, Compositional variations within graded layers in the Skaergaard intrusion, Geol. Soc. Amer. Abst. with Prog. 26, no. 2, 25.

Jang, Y.D., and Naslund, H.R., 1997, Major and trace element variations in minerals from the Skaergaard intrusion, EOS Trans. Amer. Geophys. Union 78, no. 17, S327.

Jang, Y.D., and Naslund, H.R., 1998, Geochemical evidence for changes in Magma Dynamics during the final stage of crystallization on the Skaergaard intrusion, EOS Trans. Amer. Geophys. Union 79, no. 17, S367.

Jang, Y.D., and Naslund, H.R., 1998, Major and trace element variations in pyroxene during differentiation of the Skaergaard intrusion, Geol. Soc. Amer. Abstr. with Progr. 30, no 7, A-24.

Igneous Layering

 

Pheomorphic layers

Photo 1 - Rheomorphic layers of Fe-rich pyroxenite and blocks of residual andesine-anorthosite in a matrix of ferrogabbro. Upper Border Series gamma, Skaergaard intrusion, East Greenland (Naslund, 1984).

 

Photo of Ungraded modal layering

Photo 2 - Ungraded modal layering with pronounced igneous lamination. Middle zone of the Skaergaard intrusion, East Greenland.

 

 

Photo of Modal layer at the 10  m stratigraphic level

Photo 3 - Modal layering at the 10 m stratigraphic level in the Palisades sill. Hypersthene varies from 5% to 25% in adjacent resistant and less resistant layers, respectively.

Last Updated: 8/14/14