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	<title>Encyclop&#233;die de Broc&#233;liande</title>
	<link>https://broceliande.brecilien.org/</link>
	<description>Encyclop&#233;die sur le territoire de Broc&#233;liande en Bretagne dont le c&#339;ur est le massif forestier de Paimpont-Broc&#233;liande.</description>
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		<title>Encyclop&#233;die de Broc&#233;liande</title>
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<item xml:lang="fr">
		<title>Les incendies en Broc&#233;liande - I</title>
		<link>https://broceliande.brecilien.org/Les-incendies-en-Broceliande-I</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Les-incendies-en-Broceliande-I</guid>
		<dc:date>2024-09-09T14:35:29Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande</dc:creator>


		<dc:subject>Camp&#233;n&#233;ac</dc:subject>
		<dc:subject>Paimpont</dc:subject>

		<description>&lt;p&gt;Le massif de Paimpont subit des incendies plus ou moins importants depuis le d&#233;but du 20&lt;sup&gt;e&lt;/sup&gt; si&#232;cle. Localis&#233;s en Haute et Basse for&#234;t dans la premi&#232;re moiti&#233; du 20&lt;sup&gt;e&lt;/sup&gt; si&#232;cle, ils deviennent plus fr&#233;quents sur les landes, surtout &#224; partir de 1976.&lt;/p&gt;

-
&lt;a href="https://broceliande.brecilien.org/Incendies" rel="directory"&gt;Incendies&lt;/a&gt;

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&lt;a href="https://broceliande.brecilien.org/Campeneac" rel="tag"&gt;Camp&#233;n&#233;ac&lt;/a&gt;, 
&lt;a href="https://broceliande.brecilien.org/Paimpont" rel="tag"&gt;Paimpont&lt;/a&gt;

		</description>



		
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<item xml:lang="fr">
		<title>Les incendies en Broc&#233;liande - II</title>
		<link>https://broceliande.brecilien.org/Les-incendies-en-Broceliande-II</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Les-incendies-en-Broceliande-II</guid>
		<dc:date>2024-09-09T10:31:21Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande</dc:creator>


		<dc:subject>Camp&#233;n&#233;ac</dc:subject>
		<dc:subject>Paimpont</dc:subject>

		<description>&lt;p&gt;Les 12 et 13 ao&#251;t 2022, un violent incendie se propage dans la partie ouest du massif forestier de Paimpont. Il parcourt environ 500 ha et touche une zone dans laquelle de nombreux incendies d'envergure ont eu lieu depuis 1976, le dernier datant de 2009.&lt;/p&gt;

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&lt;a href="https://broceliande.brecilien.org/Incendies" rel="directory"&gt;Incendies&lt;/a&gt;

/ 
&lt;a href="https://broceliande.brecilien.org/Campeneac" rel="tag"&gt;Camp&#233;n&#233;ac&lt;/a&gt;, 
&lt;a href="https://broceliande.brecilien.org/Paimpont" rel="tag"&gt;Paimpont&lt;/a&gt;

		</description>



		

	</item>
<item xml:lang="fr">
		<title>Origine des reliefs &#224; Broc&#233;liande - IV</title>
		<link>https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-IV</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-IV</guid>
		<dc:date>2020-12-09T06:17:02Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;1 - Contextes g&#233;ologique et topographique &lt;br class='autobr' /&gt;
Les communes de Broc&#233;liande appartiennent au domaine cratonique centre-armoricain. Ce domaine est limit&#233; au nord comme au sud par deux longs scisaillements : les zones broy&#233;es nord- et sud-armoricaines (CNA et CSA). &lt;br class='autobr' /&gt;
Le substrat g&#233;ologique est principalement constitu&#233; de roches s&#233;dimentaires : une couverture primaire (gr&#232;s et siltites) en relief du fait des faci&#232;s gr&#233;seux qui dessinent deux bandes pliss&#233;es : Synclinorium m&#233;dian (Chateaulin + (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


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<item xml:lang="fr">
		<title>Origine des reliefs &#224; Broc&#233;liande - II</title>
		<link>https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-II</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-II</guid>
		<dc:date>2020-12-09T06:16:57Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;L'article se compose de cinq parties. &lt;br class='autobr' /&gt;
1 - Le Massif armoricain (relief - terre-mer) Le r&#233;seau hydrographique de la Bretagne caract&#233;rise une asym&#233;trie de la topographie g&#233;n&#233;rale : les &#190; du drainage s'effectuent vers le sud o&#249; les bassins versants (Vilaine, Blavet, Aulne) sont peu nombreux et de grande taille 2. Au nord les bassins versants sont nombreux et de petite taille. &lt;br class='autobr' /&gt;
2 - Le Massif armoricain &#8212; Contexte g&#233;ologique - Terre-mer Le Massif armoricain correspond &#224; un domaine de socle (&#8230;)&lt;/p&gt;


-
&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


		</description>



		
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	</item>
<item xml:lang="fr">
		<title>Origine des reliefs &#224; Broc&#233;liande - I</title>
		<link>https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-I</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-I</guid>
		<dc:date>2020-12-09T06:16:44Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;Les g&#233;ographes et les g&#233;ologues s'attachent &#224; comprendre et d&#233;crire les m&#233;canismes qui fa&#231;onnent les diff&#233;rents paysages. &lt;br class='autobr' /&gt;
L'&#233;volution des reliefs r&#233;sulte des processus &#233;rosifs reli&#233;s aux r&#233;seaux fluviatiles, ou &#224; la mer, qui entament les substrats g&#233;ologiques. &lt;br class='autobr' /&gt;
Les syst&#232;mes fluviatiles qui caract&#233;risent les milieux continentaux (support des paysages) se distinguent des syst&#232;mes maritimes par l'absence de mar&#233;es, les s&#233;diments s'y d&#233;posent dans un contexte de courants unidirectionnels. (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


		</description>



		
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<item xml:lang="fr">
		<title>Les mat&#233;riaux de construction de l'abbaye de Paimpont - IV</title>
		<link>https://broceliande.brecilien.org/Les-materiaux-de-construction-de-l-abbaye-de-Paimpont-IV</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Les-materiaux-de-construction-de-l-abbaye-de-Paimpont-IV</guid>
		<dc:date>2020-12-09T06:15:58Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;Annexe 1 &#8211; Le Contexte g&#233;ologique &lt;br class='autobr' /&gt;
Annexe 2 &#8211; Mauron &#8211; Sentier g&#233;ologique Pierre Pomp&#233;i Le sentier g&#233;ologique Pierre Pomp&#233;i de Mauron a &#233;t&#233; cr&#233;&#233; &#224; l'initiative de Gilles Montgobert et de Jean Plaine. Ce circuit montre les diff&#233;rents types de roches pr&#233;sentes sur Broc&#233;liande. Elles sont accompagn&#233;es de panneaux explicatifs. &lt;br class='autobr' /&gt;
Annexe 3 &#8211;Le Volcanisme de l'Ellipse de R&#233;miniac Cette unit&#233; g&#233;ologique situ&#233;e au sud des unit&#233;s de Paimpont-Co&#235;tquidan montre un &#233;panchement volcanique &#233;tal&#233; sur le (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


		</description>



		
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<item xml:lang="fr">
		<title>Les mat&#233;riaux de construction de l'abbaye de Paimpont - III</title>
		<link>https://broceliande.brecilien.org/Les-materiaux-de-construction-de-l-abbaye-de-Paimpont-III</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Les-materiaux-de-construction-de-l-abbaye-de-Paimpont-III</guid>
		<dc:date>2020-12-09T06:15:30Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;Les murs de l'abbaye de Paimpont sont en majorit&#233; constitu&#233;s de moellons de teinte claire (Gr&#232;s armoricain) et dans une moindre mesure de faci&#232;s plus fonc&#233;s (dalles pourpr&#233;es, grison, etc.). &lt;br class='autobr' /&gt;
Les moellons de couleur claire - Le Gr&#232;s armoricain Ils sont repr&#233;sent&#233;s ici par des gr&#232;s quartzites et gr&#232;s. Ces derniers faci&#232;s semblent plus sensibles &#224; l'alt&#233;ration en surface des moellons, marqu&#233;e par des indices d'&#233;rosion atmosph&#233;rique (perte de mati&#232;re) et colorisation par des oxydes de fer (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


		</description>



		
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<item xml:lang="fr">
		<title>Les mat&#233;riaux de construction de l'abbaye de Paimpont - II</title>
		<link>https://broceliande.brecilien.org/Les-materiaux-de-construction-de-l-abbaye-de-Paimpont-II</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Les-materiaux-de-construction-de-l-abbaye-de-Paimpont-II</guid>
		<dc:date>2020-12-09T06:15:09Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>


		<dc:subject>Paimpont</dc:subject>

		<description>
&lt;p&gt;L'abbaye de Paimpont est construite au milieu de trois grandes formations g&#233;ologiques : le Gr&#232;s armoricain, dont les affleurements s'&#233;tendent sur une largeur de 3 &#224; 5 km. Les fondations de l'abbaye reposent sur le Gr&#232;s armoricain. la Formation de Pont-R&#233;an (&#171; S&#233;rie rouge &#187; de la base du Pal&#233;ozo&#239;que) qui affleure &#224; la p&#233;riph&#233;rie du massif de Paimpont, les s&#233;diments du Briov&#233;rien distants d'un peu plus de 10 km. &lt;br class='autobr' /&gt;
Dans ce contexte g&#233;ologique situ&#233; &#224; moins de 20 km de l'abbaye de Paimpont, les (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;

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&lt;a href="https://broceliande.brecilien.org/Paimpont" rel="tag"&gt;Paimpont&lt;/a&gt;

		</description>



		
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		<title>Origine des reliefs &#224; Broc&#233;liande - III</title>
		<link>https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-III</link>
		<guid isPermaLink="true">https://broceliande.brecilien.org/Origine-des-reliefs-a-Broceliande-III</guid>
		<dc:date>2020-12-07T15:18:50Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Encyclop&#233;die de Broc&#233;liande, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;1 - Les Surfaces d'aplanissement - Les pr&#233;curseurs &lt;br class='autobr' /&gt;
D&#232;s le d&#233;but du 20e si&#232;cle, les g&#233;ographes ont reconnu &#224; l'ouest, puis au centre du Massif armoricain, la pr&#233;sence de plateaux, qu'ils ont assimil&#233;s &#224; des surfaces d'aplanissement, d&#233;form&#233;es apr&#232;s leur fa&#231;onnage. Les documents topographiques permettent aujourd'hui de confirmer la forme de relief observ&#233;e par ces auteurs. &lt;br class='autobr' /&gt;
2 - Les Surfaces d'aplanissement &#8211; L'interpr&#233;tation actuelle En reprenant les hypoth&#232;ses de travail utilis&#233;es par les (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


		</description>



		
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<item xml:lang="fr">
		<title>Le minerai de fer en for&#234;t de Paimpont</title>
		<link>https://broceliande.brecilien.org/Le-minerai-de-fer-en-foret-de-Paimpont</link>
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		<dc:date>2020-12-07T13:16:15Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Guy Larcher, Yves Qu&#233;t&#233; </dc:creator>



		<description>
&lt;p&gt;&#192; partir des indications fournies par les notices des feuilles g&#233;ologiques, l'article d&#233;crit le contexte g&#233;ologique de la formation du minerai de fer aux &#200;res primaire et tertiaire. Il indique enfin des sites int&#233;ressants concernant cette th&#233;matique. Attention : ces sites sont sur des terrains priv&#233;s et leur acc&#232;s est r&#233;glement&#233;. &lt;br class='autobr' /&gt; Notre ami Yves Qu&#233;t&#233; nous a quitt&#233; le 2 octobre 2020. &lt;br class='autobr' /&gt;
Il nous a laiss&#233; huit articles (dont celui-ci) en attente de validation par le comit&#233; de lecture. Nous (&#8230;)&lt;/p&gt;


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&lt;a href="https://broceliande.brecilien.org/Geologie" rel="directory"&gt;G&#233;ologie&lt;/a&gt;


		</description>



		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
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