Utjecaj glacijacija na taloženje lesa

undergraduate thesis

• Title (english): The influence of glaciations on loess deposition
• Author: Rene Francem
• Mentor: Anita Filipčić (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Geography); Zagreb
• Defense date and country: 2024-09-19, Croatia
• Scientific / art field, discipline and subdiscipline: INTERDISCIPLINARY AREAS OF KNOWLEDGE; Geography

Abstract

Les ili prapor je pleistocenski sediment nastao djelovanjem vjetra na periglacijalnim prostorima. Različit horizontalni i vertikalni razvoj lesa je rezultat mnogih čimbenika. Porijeklo lesa se najprije traži u istraživanom području, a onda i u širim okolnim područjima. Kriofrakcija, glacijalna i fluvijalna erozija te prijenos i padinski procesi modeliranjasu dali osnovnu masu prašinastog materijalaiz kojegse kasnije dijagenezom razvio les i njemu slični sedimenti. Akumulaciju prašinastog materijala eolskog porijekla su izvršili prvenstveno sjeverni te sjeveroistočni vjetrovi tokom razdoblja maksimuma posljednjeg glacijala. Les je vrlo važan jer se nakon posljednjeg glacijala, na njemu razvio debeli sloj izuzetno plodna tla. Radi se o laganim, poroznim tlima koja su kasnije, u neolitiku, s početkom poljoprivrede bila vrlo povoljna za razvoj poljoprivrede. Neolitske su zajednice, zbog primitivnih tehnika, ovisile o prirodnoj osnovi koja je direktno utjecala na geografsku raspodjelu stanovništva i naseljenosti. Upravo iz tih razloga je neolitska poljoprivreda bila najrazvijenija na lesnim zaravnima s plodnim tlom. Također, lesne zaravni imaju izuzetnu važnost i vrijednost za današnju poljoprivredu.

Abstract (english)

Loess is a Pleistocene sediment formed by the action of wind in periglacial areas. The different horizontal and vertical development of loess is the result of many factors. The origin of loess is first sought in the studied area, and then in the wider surrounding areas. Cryo fracturing, glacial and fluvial erosion, as well as transport and slope processes, provided the basic mass of dusty material from which loess and similar sediments later developed through diagenesis. The accumulation of dusty material of aeolian origin was primarily caused by northern and northeastern winds during the peak of the last glacial period. Loess is very important a thick layer of extremely fertile soils developed on it after the last ice age. These are light, porous soils which later, in the Neolithic period, with the beginning of agriculture, were very favorable for the development of farming. Neolithic communities were dependent on the natural base due to their primitive techniques, which had a direct impact on geographical distribution of the population and settlements. For these reasons, Neolithic agriculture was most developed on loess plateaus with fertile soil. Loess plateaus are also of extraordinary importance and value for today's agriculture.

• Keywords: les; glacijalni les; prapor; glacijal; virm; lesni sedimenti; glacijacija
• Keywords (english): loess; glacial loess; glaciation; last glacial period; Würm
• Language: croatian
• URN:NBN: urn:nbn:hr:217:240427
• Study programme: Title: Undergraduate study; specializations in: research; Course: research; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geografije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geografije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-09-25 10:08:24