Weathering in the Wyborg rapakivi area, southeastern Finland
Abstract
Field survey of weathering sites in the Wyborg rapakivi area indicates that saprolites are far more common in the central part of the massif than in the marginal areas. Many till‑covered saprolites and parautochthonous crust‑tills prove the weathering to be of preglacial origin. The rapakivi saprolites are of grus type. The weathering has caused both mechanical and chemical alteration of the parent rock. The clay mineral percentage of the saprolites is low and the formed minerals do not indicate any strong chemical weathering. The most chemically affected minerals are the dark ones and the plagioclases. The residual topography comprises small tor‑like features. Their morphology is guided by the fracturing of the rockPublished
1985-02-01
Issue
Section
Research Papers
License
Authors who publish with Fennia agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. The license of the published metadata is Creative Commons CC0 1.0 Universal (CC0 1.0).
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a doctoral dissertation or book compilation), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
How to Cite
Weathering in the Wyborg rapakivi area, southeastern Finland. (1985). Fennia - International Journal of Geography, 163(2), 309-313. https://fennia.journal.fi/article/view/9067
.png)



